Answers are grounded in this paper and cite their sources.
A 1,3- or a 1,4- cis axial tert -butyldimethylsilyloxy substituent on the pyranose derived chiral auxiliary for the allene ether Nazarov cyclization leads to products in high optical purity. α-Pyranose and β-pyranose derived auxiliaries lead to enantiomeric products.
No takes yet. Share an insight, caveat, or question.
Banaag et al. (2007) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: