Tetrahedron

Nickel-catalyzed regio-and stereoselective homo 1, 4-dialkenylation of conjugated dienes

DC Jou, TY Hsiao, MY Wu, KC Kong, CH Cheng

Index: Jou, Der-Ching; Hsiao, Tsung-Yu; Wu, Ming-Yuan; Kong, Kwang-Cheng; Cheng, Chien-Hong Tetrahedron, 1998 , vol. 54, # 7 p. 1041 - 1052

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Citation Number: 13

Abstract

2, 3-Dimethyl-1, 3-butadiene and cyclic dienes react with β-iodoenones (RI: 3-Iodo-2- cyclohexen-1-one, 5, 5-dimethyl-3-iodo-2-cyclohexen-1-one and 3-iodo-2-cyclopenten-1- one) in the presence of Zn and catalytic amount of NiBr2 to afford the corresponding homo 1, 4-addition products in good yields. For 2, 3-dimethyl-1, 3-butadiene, only the products RCH2C (CH3)= C (CH3) CH2R with Z geometry were observed. For cyclic dienes, the ...