Reactions of higher order cyanocuprates derived from 2-lithiated furans: scope, limitations, and synthetic utility
作者:John S Ng、James R Behling、Arthur L Campbell、Duy Nguyen、Bruce Lipshutz
DOI:10.1016/0040-4039(88)85081-0
日期:1988.1
A general study on the chemistry of higherorder organocuprates derived from 2-lithiated furans with enones, epoxides, aldehydes and halides is described.
描述了对由2-锂化的呋喃与烯酮,环氧化物,醛和卤化物衍生的高级有机铜酸盐的化学性质的一般研究。
Photopolymerization sensitizer composition
申请人:Kawasaki Kasei Chemicals Ltd.
公开号:US11352450B2
公开(公告)日:2022-06-07
The purpose of the present invention is to provide a photopolymerizable composition which can act as a photopolymerization sensitizer that is active against light having a wavelength falling within a wavelength range of from 300 to 500 nm, and which has such a property that coloring of a cured product produced by polymerizing a photopolymerizable composition containing the photopolymerization sensitizer is less.
A photopolymerization sensitizer composition characterized by comprising a photopolymerization sensitizer containing an alkoxyanthracene compound represented by the formula (1) and a singlet oxygen quencher; and a photopolymerizable composition containing the photopolymerization sensitizer composition:
in the formula (1), n represents an integer of 1 or 2; R represents a C1-12 alkyl group; and X represents a hydrogen atom or a C1-8 alkyl group.
[OBJECT]
The purpose of the present invention is to provide a photopolymerizable composition which can act as a photopolymerization sensitizer that is active against light having a wavelength falling within a wavelength range of from 300 to 500 nm, and which has such a property that coloring of a cured product produced by polymerizing a photopolymerizable composition containing the photopolymerization sensitizer is less.
[SOLUTION TO PROBLEM]
A photopolymerization sensitizer composition characterized by comprising a photopolymerization sensitizer containing an alkoxyanthracene compound represented by the formula (1) and a singlet oxygen quencher; and a photopolymerizable composition containing the photopolymerization sensitizer composition:
in the formula (1), n represents an integer of 1 or 2; R represents a C
1-12
alkyl group; and X represents a hydrogen atom or a C
1-8
alkyl group.
New preparation of benzylic zinc reagents via a fragmentation reaction
作者:Claudia Piazza、Nicolas Millot、Paul Knochel
DOI:10.1016/s0022-328x(00)00840-8
日期:2001.4
fragmentation of sterically hindered homobenzylic zinc alcoholates proceeds readily leading to benzyliczinc reagents free from any Wurtz-coupling product. Reaction of these organometallic intermediates with various aldehydes produces new homobenzylic alcohols in moderate to good yields. A 1,4-addition of these newly prepared benzylicorganometallics to an alkylidenemalonate is also reported.