C2-Symmetric 1,2-Diamine/Copper(II) Trifluoromethanesulfonate Complexes as Chiral Ctalysts. Asymmetric Cyclopropanations of Styrene with Diazo Esters

DOI: 10.1016/0040-4039(94)80029-4

Source and publish data:

Tetrahedron Letters p. 7985 - 7988 (1994)

Update date:2022-07-30

Topics:

Authors:

Kanemasa, Shuji

Hamura, Satoshi

Harada, Etsuko

Yamamoto, Hidetoshi

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Article abstract of DOI:10.1016/0040-4039(94)80029-4

Styrene and diazo esters react in the presence of copper(II) trifluoromethanesulfonate (1 molpercent) and (1S,2S)-N,N'-di(mesitylmethyl)-1,2-diphenyl-1,2-ethanediamine (2-3 molpercent) to give 2-phenyl-1-cyclopropanecarboxylates in good to excellent optical yields.This reaction has been applied to the synthesis of crythanthemic acid.

Full text of DOI:10.1016/0040-4039(94)80029-4

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