A Highly Efficient and Stereoselective Cycloaddition of Nitrones to N-Vinylpyrroles
摘要:
1,3-Dipolar cycloadditions of a number of C-aryl, C-carbamoyl-, and C,C-bis(methoxycarbonyl)nitrones and substituted N-vinylpyrroles proceed with high efficiency and regioselectivity with the formation of only one isomeric substituted 5-(1H-pyrrol-1-yl)isoxazolidine cycloadduct.
Regioselective cycloaddition of C,N-diarylnitrones to arylallenes and of N-aryl-C-carbamoylnitrones to methyl buta-2,3-dienoate
作者:A. P. Molchanov、Yu. V. Malinina、R. R. Kostikov、A. V. Stepakov
DOI:10.1134/s1070428015030136
日期:2015.3
Cycloadditions of C,N-diarylnitrones to non-activated arylallenes and of N-aryl-C-carbamoylnitrones to methyl buta-2,3-dienoate regioselectively afforded mixtures of diastereoisomeric substituted 4-methylideneisoxazolidines.
Regio- and stereoselective cycloaddition of C-Carbamoylnitrones to 1-benzylidene-3,3-dichloro-2,2-dimethylcyclopropane
作者:A. P. Molchanov、T. Q. Tran
DOI:10.1007/s10593-013-1271-8
日期:2013.6
C-Carbamoylnitrones add regio- and stereoselectively to 1-benzylidene-3,3-dichloro-2,2-dimethyl-cyclopropane with the formation of one diastereomer of 4-spirocyclopropaneisoxazolidine.
Regioselective cycloaddition of C-carbamoylnitrones to methyl (E)-2-(2-phenylcyclopropylidene)acetate and methyl (E)-2-methylidene-3-phenylcyclopropane-1-carboxylate
作者:A. P. Molchanov、T. Q. Tran、A. V. Stepakov、G. L. Starova、R. R. Kostikov
DOI:10.1134/s1070428014010151
日期:2014.1
N-Aryl-C-(arylcarbamoyl)nitrones regioselectively add to methyl 2-(2-phenylcyclopropylidene)-acetate and methyl 2-methylidene-3-phenylcyclopropanecarboxylate to give in each case two diastereoisomeric 5-oxa-6-azaspiro[2.4]heptane-4-carboxylates.