3-Substituted phthalides were synthesized for the first time by crossed alkyne cyclotrimerisations with Wilkinson's catalyst. Esterification of propiolic acids with chiral propargylic alcohols by either the DCC/DMAP or the Mitsunobu method allows the synthesis of either enantiomeric form of diyne esters, that are used in crossed alkyne cyclotrimerisations with acetylene to provide 3-substituted phthalides in both enantiomeric forms.
机构:W China Sch Pharm, Dept Chem Med Nat Prod, Chengdu 610041, Peoples R China
Hao Song
Jun Yang
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机构:W China Sch Pharm, Dept Chem Med Nat Prod, Chengdu 610041, Peoples R China
Jun Yang
Wei Chen
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机构:W China Sch Pharm, Dept Chem Med Nat Prod, Chengdu 610041, Peoples R China
Wei Chen
Yong Qin
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W China Sch Pharm, Dept Chem Med Nat Prod, Chengdu 610041, Peoples R ChinaW China Sch Pharm, Dept Chem Med Nat Prod, Chengdu 610041, Peoples R China