Water-soluble palladium complexes with sulfonated diphosphines dpppts (1,3-bis[di(m-sodiumsulfonatophenyl)phosphino]propane), dppbts (1,4-bis[di(m-sodiumsulfonatophenyl)phosphino]butane), (S,S)-BDPPTS (2,4-bis[di(m-sodiumsulfonatophenyl)phosphino butane) and (R,R)-CBDTS (1,2-bis[di(m-sodiumsulfonatophenyl)phosphinomethyl]cyclobutane) are active in the hydrocarboxylation of vinyl arenes without addition of acid. The stability of the catalyst systems increases when the reaction is performed in an acidic medium and the catalysts could be recycled twice with no loss in activity or enantioselectivity in the case of the [Pd(OAc)(2)]/BDPPTS system. Enantioselectivities up to 43% are obtained. (C) 1999 Elsevier Science Ltd. All rights reserved.
机构:
Hong Kong Polytech Univ, Dept Appl Biol & Chem Technol, Hong Kong, Peoples R ChinaHong Kong Polytech Univ, Dept Appl Biol & Chem Technol, Hong Kong, Peoples R China
Yan, M
Li, X
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Hong Kong Polytech Univ, Dept Appl Biol & Chem Technol, Hong Kong, Peoples R ChinaHong Kong Polytech Univ, Dept Appl Biol & Chem Technol, Hong Kong, Peoples R China
Li, X
Chan, ASC
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Hong Kong Polytech Univ, Dept Appl Biol & Chem Technol, Hong Kong, Peoples R ChinaHong Kong Polytech Univ, Dept Appl Biol & Chem Technol, Hong Kong, Peoples R China
Chan, ASC
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY,
1999,
218
: U772
-
U772
机构:
Guangzhou Univ, Sch Chem & Chem Engn, GuangZhou Higher Educ Mega Ctr, 230 Wai Huan Xi Rd, Guangzhou 510006, Guangdong, Peoples R ChinaGuangzhou Univ, Sch Chem & Chem Engn, GuangZhou Higher Educ Mega Ctr, 230 Wai Huan Xi Rd, Guangzhou 510006, Guangdong, Peoples R China
Zhang, Rui
Xie, Bin
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Guangzhou Univ, Sch Chem & Chem Engn, GuangZhou Higher Educ Mega Ctr, 230 Wai Huan Xi Rd, Guangzhou 510006, Guangdong, Peoples R ChinaGuangzhou Univ, Sch Chem & Chem Engn, GuangZhou Higher Educ Mega Ctr, 230 Wai Huan Xi Rd, Guangzhou 510006, Guangdong, Peoples R China
Xie, Bin
Chen, Guo-Shu
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Guangzhou Univ, Sch Chem & Chem Engn, GuangZhou Higher Educ Mega Ctr, 230 Wai Huan Xi Rd, Guangzhou 510006, Guangdong, Peoples R ChinaGuangzhou Univ, Sch Chem & Chem Engn, GuangZhou Higher Educ Mega Ctr, 230 Wai Huan Xi Rd, Guangzhou 510006, Guangdong, Peoples R China
Chen, Guo-Shu
Qiu, Liqin
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Sun Yat Sen Univ, Sch Chem & Chem Engn, 135 Xin Gang Xi Rd, Guangzhou 510275, Guangdong, Peoples R ChinaGuangzhou Univ, Sch Chem & Chem Engn, GuangZhou Higher Educ Mega Ctr, 230 Wai Huan Xi Rd, Guangzhou 510006, Guangdong, Peoples R China
Qiu, Liqin
Chen, Yi-Xin
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Guangzhou Univ, Sch Chem & Chem Engn, GuangZhou Higher Educ Mega Ctr, 230 Wai Huan Xi Rd, Guangzhou 510006, Guangdong, Peoples R ChinaGuangzhou Univ, Sch Chem & Chem Engn, GuangZhou Higher Educ Mega Ctr, 230 Wai Huan Xi Rd, Guangzhou 510006, Guangdong, Peoples R China