Tetrahedron Letters

Asymmetric [3+ 2] cycloaddition of 2-(sulfonylmethyl)-2-propenyl carbonate catalyzed by chiral ferrocenylphosphine-palladium complexes

A Yamamoto, Y Ito, T Hayashi

Index: Yamamoto, Akihiro; Ito, Yoshihiko; Hayashi, Tamio Tetrahedron Letters, 1989 , vol. 30, # 3 p. 375 - 378

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Citation Number: 43

Abstract

= 14.4 and 8.2 Hz, 1 H), 2.505 (ddd, = 14.4, 7.5, and 3.7 Hz, 1 H), 2.591 (ddt, = 16.5, 6.7, and 2.0 Hz, 1 H), 2.71–2.81 (m, 1 H), 3.146 (broad quintet, = 7.5 Hz, 1 H), 3.664 (s, 3 H), 4.06–4.10 (m, 1 H), 5.050 (q, = 2.0 Hz, 1 H), 5.252 (q, = 2.0 Hz, 1 H), 7.54–7.59 (m, 2 H), 7.63–7.69 (m, 1 H), 7.85–7.91 (m, 2 H). 1 H NMR (CDCl 3 ) for cis-3a: δ 2.32–2.49 (m, 3 H), 2.571 (ddd, = 15.1, 7.0, and 1.0 Hz, 1 H), 2.759 (dddd, = 12.1, 10.6, 7.9, and 7.0 Hz, 1 H), 3.681 ( ...