Self-catalytic Michael reaction of enolizable carbonyl compounds. A facile route to α-methylene-δ-valerolactones
作者:Henryk Krawczyk、Marcin Śliwiński
DOI:10.1016/j.tet.2003.09.039
日期:2003.11
2-phosphono-5-oxoalkanoates 3 were prepared by the Michaelreaction of enolizable carbonylcompounds with the acrylate 1. The corresponding 2-phosphono-5-oxoalkanoic acids 4 were converted into α-phosphono-δ-valerolactones 6. The products were shown to be useful substrates for the synthesis of α-methylene-δ-valerolactones 7 by the Horner–Wadsworth–Emmons reaction.
BALDWIN S. W.; CRIMMINS M. T.; CHEEK V. I., SYNTHESIS, 1978, NO 3, 210-211
作者:BALDWIN S. W.、 CRIMMINS M. T.、 CHEEK V. I.
DOI:——
日期:——
POLYMER AND CHEMICALLY AMPLIFIED RESIST COMPOSITION COMPRISING THE SAME
申请人:FUJI Yusuke
公开号:US20090264565A1
公开(公告)日:2009-10-22
The present invention provides a polymer comprising a structural unit represented by the formula (Ia) or (Ib):
wherein R
1
represents a hydrogen atom etc., R
2
represents a linear, branched chain or cyclic C1-C8 alkyl group, R
3
represents a methyl group, n represents an integer of 0 to 14, Z
1
represents a single bond etc., k represents an integer of 1 to 4, R
4
and R
5
each independently represents a hydrogen atom etc., and m represents an integer of 1 to 3,
a structural unit represented by the formula (II):
wherein R
6
and R
7
each independently represents a hydrogen atom etc., R
8
represents a methyl group, R
9
represents a hydrogen atom etc., Z
2
represents a single bond etc., k′ represents an integer of 1 to 4, Z′ represents a group capable to eliminate by an action of an acid, and a structural unit represented by the formula (III):
wherein R
10
represents a carboxyl group etc., l′ represents an integer of 0 to 3, Z
3
represents a single bond etc., and k″ represents an integer of 1 to 4.