Products from furans. 3. Crystal and molecular structure, proton nuclear magnetic resonance, and conformational studies of 2-methyl-2-aryl-substituted 6-hydroxy-2H- …

…, MG Polissiou, SE Filippakis, D Mentzafos…

Index: Georgiadis, Minas P.; Couladouros, Elias A.; Polissiou, Moschos G.; Filippakis, S. E.; Mentzafos, D.; Terzis, A. Journal of Organic Chemistry, 1982 , vol. 47, # 16 p. 3054 - 3058

Full Text: HTML

Citation Number: 14

Abstract

Crystallographic studies showed that the p (benzenesulfony1) phenyl substituent in 2-[p- (benzenesulfony1)-phenyl]-2-methyl-6-methoxy-2H-pyran-3 (6H)-one (5-B) and in 2-[p- (benzenesulfonyl) phenyl]-2-methyl-6-[[(methylamino) carbonyl] o~ y]-2H-pyran-3 (6H)-one (4-A) has a pseudoaxial orientation while the 6-substituent is cis in 5-B and trans in 4-A both in a sofa configuration. 5-B crystallizes in space group Pbca with 2= 8 and the following ...