Acyclic stereoselection. 44. Diastereoselectivity in the ortho ester Claisen rearrangement of chiral propargylic alcohols. Use of .beta.-allenic esters as chiral methylmalonaldehyde synthons
Acyclic stereoselection. 44. Diastereoselectivity in the ortho ester Claisen rearrangement of chiral propargylic alcohols. Use of .beta.-allenic esters as chiral methylmalonaldehyde synthons