An improved synthesis of cyclopropylacetylene

摘要

The present invention relates generally to novel methods for the synthesis of cyclopropylacetylene which is a reagent in the asymmetric synthesis of (S)-6-chloro-4-cyclopropylethynyl-4-trifluoromethyl-1,4-dihydro-2H-3,1-benzoxazin-2-one which is a useful human immunodeficiency virus (HIV) reverse transcriptase inhibitor.