New approaches to the synthesis of vitamin D metabolites. 2. Effect of some substituents on stereochemistry in the intramolecular cycloadditions of nonatrienes
作者:Kathyln A. Parker、Tahir Iqbal
DOI:10.1021/jo00228a040
日期:1987.9
N,N-dimethylaniline as a solvent for intramolecular Diels Alder reactions. Improved yields and changes in stereoisomer ratios