- MICHAEL ADDITION REACTION PRODUCT AND ACTIVE ENERGY RAY-CURABLE COMPOSITION
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The present invention provides a Michael addition reaction product between a specified compound having a group which functions as a Michael donor and a monomer or polymer having a group which functions as a Michael acceptor, a photoinitiator containing the Michael addition reaction product, and an active energy ray-curable composition containing the photoinitiator. The compound having a group functioning as a Michael donor used in the present invention is a phenyl ketone derivative and is characterized by having an amino group or a mercapto group as the group functioning as a Michael donor.
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Page/Page column 15-16
(2012/05/20)
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- Aerobic oxidation of secondary benzylic alcohols and direct oxidative amidation of aryl aldehydes promoted by sodium hydride
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We reported herein new reactivities and possible mechanistic implications of a simplest oxidant (NaH/air) uncovered on a broad range of useful transformations, including aerobic alcohol oxidations, allylic alcohol isomerizations and oxidations, cyclopropyl alcohol fragmentations, and direct aryl aldehyde oxidative amidations. These readily implementable transition-metal-free processes feature exceptional material accessibility, operational simplicity, and environmental compatibility, and add new dimensions to its synthetic utilities that are fairly robust yet had not previously been fully realized and systematically explored.
- Wang, Xinbo,Wang, David Zhigang
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supporting information; experimental part
p. 3406 - 3411
(2011/06/17)
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- Aminoaryl ketone photoinitiators
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The photopolymerizable mixture described contains (A) at least one ethylenically unsaturated photopolymerisable compound, (B) a photoinitiator of the formula I STR1 and (C) a photosensitiser from the group of aromatic carbonyl compounds having a triplet energy of 225-310 kJ/mol, for example xanthones, thioxianthones, coumarins, phthalimides, phenones and the like. Ar is phenyl substituted in the 4-position by a substituted amino group, R1 and R2 are alkyl, R3 and R4 are alkyl or alkoxyalkyl, or R3 and R4 together are 3-oxapentamethylene. Said sensitisers (C) raise the activity of said photoinitiators (B) without shortening the shelf life of the mixtures. The photocurable mixtures are used especially as binders for printing inks or paints.
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