China Tobacco Yunnan Industrial Co., Ltd

Wei Zhe

Ping Lei

Zhenjie Li

Zhihua Liu

Nengjun Xiang

Weimin Gong

Yunhua Qin

Liu Yang

Shiwei Li

Jianjun Xia

Qianxu Yang

Juan Li

Kai Wang

Deshou Mao

Ying Yang

Yipeng Zhang

Baokun Zhu

Wei Zhang

Sheng Lei

Kunmiao Wang

Li Gao

Lei Fu

Qianghui Zhou

Zhiqiang Xie

Hongming Yang

Ran Tian

Yuanxing Duan

Qinpeng Shen

Yang Zhao

Xuemei Li

Dingrong Guo

Guofu Zhou

A (Z)-solanone has the steric formula of: or with the name of (S,Z)-5-isopropyl-8-methyl-6,8-diene-2-one or (R,Z)-5-isopropyl-8-methyl-6,8-diene-2-one. A process for the preparation of the (Z)-type solanone and the use thereof in flavoring of cigarette shred are further disclosed. The process includes the following steps: (1) reacting isopentanal and methyl vinyl ketone, under the action of a catalyst and a co-catalyst, to give (S)-2-isopropyl-5-carbonylhexanal or (R)-2-isopropyl-5-carbonylhexanal; (2) reacting the (S)-2-isopropyl-5-carbonylhexanal or the (R)-2-isopropyl-5-carbonylhexanal obtained in step (1) with (iodomethyl)triphenylphosphonium iodide, to give (S,Z)-7-iodo-5-isopropyl-6-ene-2-one or (R,Z)-7-iodo-5-isopropyl-6-ene-2-one; and (3) reacting the (S,Z)-7-iodo-5-isopropyl-6-ene-2-one or the (R,Z)-7-iodo-5-isopropyl-6-ene-2-one obtained in step (2) with pinacol isopropenylborate in the presence of a catalyst to give the (Z)-solanone.

(z)-solanone, and preparation process and use thereof

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Kunming, China

Wei Zhe