Search

Your search keyword '"Valdemar Lacerda Junior"' showing total 1 results
Start Over Author "Valdemar Lacerda Junior" Publisher beilstein-institut
1 results on '"Valdemar Lacerda Junior"'

1. High stereoselectivity on low temperature Diels-Alder reactions

Author

Luiz Carlos da Silva Filho, Valdemar Lacerda Júnior, Mauricio Gomes Constantino, Gil Valdo José da Silva, and Paulo Roberto Invernize

Subjects
Science, Organic chemistry, QD241-441
Abstract

We have found that some of the usually poor dienophiles (2-cycloenones) can undergo Diels-Alder reaction at -78°C with unusually high stereoselectivity in the presence of niobium pentachloride as a Lewis acid catalyst. A remarkable difference in reaction rates for unsubstituted and α- or β-methyl substituted 2-cycloenones was also observed.

Published
2005
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results