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Authors:
NAVARRINI W.
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The little, juvenile and aggressive “fluorine atom” is growing up and
also his situation is becoming your prime focus. Fluorine atom is
definitively unique and confers distinctive molecular properties to
many fluorine containing compounds studied for relevant
developments. Surprisingly, “the little fluorine” carried out the
desired job in countless applications. Its behaviour “wonderful or
terrible” is distinctive for the reason that it is possible to replace any
hydrogen in an organic molecule or macromolecule with fluorine
atom, creating an infinite extension of completely synthetic organic
chemistry, since very few compounds containing carbon-fluorine
bonds are present in nature (1). Starting from the discovery of PTFF
by Roy Plunkett, serendipity is quite frequent in fluorine chemistry,
also due to the infinite number of possible compounds and related
properties
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Authors:
MEREU C., CHAPMAN P.J. (Field Fisher Waterhouse LLP, BELGIUM)
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A new regulation (Regulation (EC) No 1107/2009)
concerning the placing on the market of plant protection
products has been recently published. This regulation
replaces Council Directive 91/414/EEC.
Many of the provisions of the new regulation are broadly
similar to those in the Directive. However important
changes include the introduction of hazard based cut-off
criteria, the establishment of candidates for substitution and
comparative assessment; together with zonal authorisation
and mutual recognition for plant protection products
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Authors:
PUOCI F., CIRILLO G., SETTINO R., CURCIO M., PARISI O.I. ET ALL (Univ of Calabria, ITALY)
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In this work, polymeric derivative of ferulic acid
was synthesized by employing ascorbic acid-H2O2 as
redox initiator system at room temperature. The insertion
of ferulic acid into the polymeric chain was confirmed by
FT-IR analyses, and the total antioxidant capacity of the
macromolecular system determined by the molybdate
method, and correspond to a ferulic acid equivalent
concentration of 0.59 mM. UV spectra are characterized by
broad absorption bands in the UVA and UVB region, showing
the efficiency of the polymeric system in preventing the
UV-induced damages
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Authors:
SCHOENING K.U. (BASF, SWITZERLAND)
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In the first part of this review (last issue), recent
applications of tetramethylpiperidine-N-oxyl (tempo) in
synthetic organic chemistry were presented. The second part
of this review primarily focuses on the use of N-alkoxyamines
and N-oxyl compounds in an industrial context. It also
attempts to demonstrate the auspicious potential of
this compound class by giving an insight into less known
applications in selected scientific areas
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Authors:
KÄHKÖNEN E., SOIRINSUO K., NORDSTROM K. (Aalto Univ, FINLAND)
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The placing of biocides on the market of the
European Union (EU) is regulated by two review programs
defined by the Biocidal Products Directive (BPD) and the
Plant Protection Products Directive (PPPD). Furthermore,
product specific directives specify the biocidal products
which are permitted for use in cosmetics and foodstuffs.
Moreover, restrictions apply to the residuals of Plant Protection
Products (PPP) in foodstuffs. The currently available biocide
selection is thus strictly defined, but will also meet even more
challenges by the emerging chemicals regulation such
as REACH, Volatile Organic Compound (VOC ) restrictions
and the Water Framework directive
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Authors:
NAVARRINI W., SANSOTERA M., VENTURINI M., BIANCHI C.L., ET ALL (Politecnico di Milano, ITALY)
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The progresses in the magnetic media technology
brought to the application of liquid lubricant films on
diamond-like carbon (DLC) coatings. Hard surfaces are
typically lubricated with fluorinated or perfluorinated organic
compounds, such as perfluoropolyethers (PFPE) (1). Many
attempts have been done to obtain a stable layer of PFPE
lubricant on the DLC surface by dip-coating or by vapour
deposition so as to minimize any friction and wear (2, 3).
Diamond-like carbons are formed by an amorphous mixture
of sp3 and sp2 hybridized carbon atoms with hydrogen atoms
incorporated in the structure (a-C:H DLC). We have established
a specific methodology for the straight-forward introduction
of perfluorinated groups with carbon-carbon bond formation
on a variety of unsaturated materials (4-8)
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Authors:
OKAZOE T. (Asahi Glass Co., JAPAN)
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Perfluorinated compounds play an important role
in the materials industry, although perfluorinated building
blocks have not been widely available for very long. The
recent development of liquid-phase direct fluorination
techniques has brought about the production of various
new perfluorinated compounds. The methods for preparing
perfluorinated compounds are reviewed, and recent
developments in techniques for the synthesis of perfluorinated
building blocks are presented
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Authors:
TOGNI A., KOLLER R. (Swiss Federal Institute of Technology, SWITZERLAND)
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Fluorinated compounds are valuable synthetic
materials but the synthesis of such compounds often relies
on building block strategies. Herein we present a mild and
selective method for the direct synthesis of trifluoromethyl
ethers from alcohols using a hypervalent iodine(III ) electrophilic
trifluoromethylating agent developed in our group
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Authors:
CLARK N. (Hammonds LLP, UK)
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With increasingly severe sanctions in place for breaches of
competition law and active enforcement by the European
Commission and national competition authorities, companies
need to be mindful of possible pitfalls presented by the RE ACH
legislation. This article considers possible anti-competitive
conduct in the context of RE ACH and provides some practical
guidance for companies on avoiding such risks whilst still
meeting their compliance obligations under RE ACH
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Authors:
POLASTRO E., TUOVINEN J. (Arthur D. Little, BELGIUM)
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CT O (crude tall oil) fractionation – a little known
niche in the chemical space – represents an exquisite
example of a bio refining activity contributing to both
reduce dependency on fossil feed stocks as well as to
avoid substantial volumes of greenhouse gases emissions
as mirrored in avoided GHG (Greenhouse gases) emissions
in the EU alone of 400 kt - equivalent to roughly a quarter
million cars.
This is resulting from the low carbon footprint of CT O derived
materials compared to their substitutes - be these vegetable
oil or crude oil based
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Authors:
FEZZARDINI G.
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Like many other western world people working in the chemical
sector, I have witnessed the miraculous growth of China in recent
decades. I often recall the time I worked in Hong Kong, a sort of
window overlooking a yet unknown world, which even then, it was
the ‘80s and ‘90s, showed signs of a development that would have
soon surprised the whole world. A very rapid development that
continues to surprise for the size of the phenomenon. It’s not just a
matter of how big China’s chemical sector growth is, it’s also about
growing quality and organisation. Rapid progress inevitably
generates critical issues to be resolve, but it must be said that
problems are always seen by the Chinese as a challenge that can,
and must, be overcome - a typical feature of the Asian mentality
that continuously sets new goals to be achieved, not only through
emulation, but often aiming at perfection
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Authors:
LENNON I.C. (Chiral Quest, UK)
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The term “privileged ligands” was coined many years ago to describe
systems that create effective asymmetric environments for
mechanistically unrelated reactions (1). In terms of asymmetric
hydrogenation electron rich P-chiral ligands (Figure 1) have been
demonstrated to be privileged in this field. Rhodium catalysts based on
these ligands have been shown to have high activity and selectivity for
a broad range of asymmetric hydrogenation reactions. The first ligand
in this class was DiPAMP introduced by Knowles in 1974 (2); Imamoto
described the Bis-P* and mini-Phos systems in 1998 (3) and 1999 (4)
respectively; and Hoge reported the TriChickenFootPhos (TCFP) ligand
in 2004 (5). Chiral Quest, in collaboration with Xumu Zhang, has
developed three ligands in this privileged class; TangPhos (6), Binapine
(7) and DuanPhos
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Authors:
MELE A. (Politecnico di Milano, ITALY)
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The use of nuclear magnetic resonance (NMR)
intermolecular nuclear Overhauser effect (NOE) represent
one of the most effective investigation tool for the assessment
of nanostructural organization in ionic liquids. Homo- and
heteronuclear NOE provide, in principle, information on all
the possible interactions within the liquid: cation-cation,
cation-anion, anion-anion and, in case, solute solvent
contacts. Some paradigmatic cases taken from the recent
literature are exposed with the goal of outlining general
approaches and strategies
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Authors:
BENITO-LOPEZ F., KETTELARIJ A.J., EGBERINK R.J.M., VELDERS A.H. ET ALL (Univ of Twente MESA, NETHERLANDS)
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The influence of a pressure of 60 MPa on the
conversion and the stereoselectivity of the Diels-Alder
reaction of 2- and 3-furylmethanol with methyl-, benzyl-, and
phenylmaleimide was studied in a capillary micro-reactor. In
the case of 2-furylmethanol, a 1.7-fold higher conversion was
obtained at 60 MPa with respect to 0.1 MPa experiments.
Pressure positively affects the formation of the exo isomer,
whereas in the case of 3-furylmethanol pressure does not
affect the reaction
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