Stereocontrolled construction of octahydroquinolizines, octahydroindolizines, hexahydrobenzo[a]quinolizines, and an octahydroindolo[2,3-a]quinolizine by an intramolecular double Michael reaction: synthesis of (±)epilupinine
trifluoromethanesulphonate in the presence of triethylamine at –78 to 20 °C. A simple synthesis of an alkaloid, (±)-epilupinine, was accomplished. Hexahydrobenzo[a]-quinolizin-4-ones and an octahydroindolo[2,3-a]quinolizin-4-one were also constructed by the same method.
Polymers of self- and hydroxyl reactive formaldehyde-free cyclic hemiamidal and hemiamide ketal crosslinking monomers
申请人:AIR PRODUCTS AND CHEMICALS, INC.
公开号:EP0211432A2
公开(公告)日:1987-02-25
A compound represented by the following formula:
wherein
R is a C3-C21 olefinically unsaturated organic radical having functionality which renders the nitrogen atom electron deficient, the olefinic unsaturation functionality being polymerizable,
R' is hydrogen or a C1-C4 alkyl radical, or
R and R' together with the nitrogen atom can form an olefinically unsaturated 5 to 7-member ring which has functionality that renders the nitrogen atom electron deficient and the olefinic unsaturation functionality is polymerizable,
R2 and R3 are hydrogen, a C1-C4 alkyl or acyl radical, or
R2 and R3 together are a C2-C4 alkylene group,
R4 is hydrogen or a C1-C4 alkyl, acyl, ester, amide or acid group, and
n is an integer from 1 to 10, provided n is not 1 when R is (meth)acryloyl, R2 and R3 are methyl and R' and R4 are hydrogen.
Under acidic conditions the above compounds in which R' is hydrogen afford cyclic hemiamidals and hemiamide ketals of the following formula:
The dialkyl acetal and ketal compounds and the cyclic hemiamidal and hemiamide ketal compounds can be homopolymerized or polymerized with other copolymerizable monomers.
Polymers of self- and diol reactive formaldehyde-free crosslinking monomers
申请人:AIR PRODUCTS AND CHEMICALS, INC.
公开号:EP0218827A2
公开(公告)日:1987-04-22
A compound represented by the following formula:
wherein R is a C3-C24 olefinically unsaturated organic radical having functionality which renders the nitrogen atom electron deficient, the olefinic unsaturation functionality being polymerizable.
R' is hydrogen or a C,-C4 alkyl radical, or
R and R' together with the nitrogen atom can form an olefinically unsaturated 5 7-member ring which has functionality that renders the nitrogen atom electron deficient and the olefinic unsaturation functionality is polymerizable,
R2 and R3 are hydrogen, a C1-C4 alkyl or acyl radical, or
R2 and R3 together are a C2-C4 alkylene group,
R4 is hydrogen or a C,-C4 alkyl, acyl, ester, amide or acid group. and
n is an integer from 1 to 10, provided n is not 1 when R is (meth)acryloyl, R2 and R3 are methyl and R' and R4 are hydrogen.
Under acidic conditions the above compounds in which R' is hydrogen afford cyclic hemiamidals and hemiamide ketals of the following formula:
The dialkyl acetal and ketal compounds and the cyclic hemiamidal and hemiamide ketal compounds can be homopolymerized or polymerized with other copolymerizable monomers.