Journal of Organic Chemistry p. 2208 - 2214 (1980)
Update date:2022-08-04
Topics:
Peters, Jacobus A. M.
Posthumus, Tonny A. P.
Vliet, Nicolaas P. van
Zeelen, Filippus J.
Johnson, William S.
dl-19-Nor-4-pregnen-20-one (2) was prepared by cationic cyclization of racemic methoxy trienyne 1.The mechanism of this reaction is discussed on the basis of byproduct analysis, deuterium labeling experiments, and the cyclization of optically active subst
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