Tetrahedron Letters p. 8827 - 8831 (1999)
Update date:2022-08-03
Topics:
Kitagawa, Osamu
Momose, Shu-ichi
Fushimi, Yoshihisa
Taguchi, Takeo
Various atropisomeric amides were prepared in optically pure forms (≥98% ee) through the optical resolution of the amide ester derived from (R)-pantolactone, N-allyl-ortho-tert-butylaniline and oxalyl chloride. Asymmetric carbonyl addition reaction of an alkyllithium and asymmetric iodolactonization with these atropisomeric amides proceeded with high stereoselectivity.
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