Tetrahedron Letters p. 4615 - 4618 (1981)
Update date:2022-08-11
Topics:
Smith, Michael J.
Wilson, Stanley E.
Alkoxyl groups in alkenyllithiums can influence the stereochemistry of cyclization.The presence of n-butyllithium increases the stereoselectivity such that only one stereochemistry results; the presence of TMEDA negates the heteroatom's influence so that only the other stereochemistry results.Yields are 33percent to 44percent.
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(1985)
