专利名称：DL-Strigol intermediates 发明人：Charles J. Sih 闪光灯柔光罩
申请号：US05/532325
申请日：19741213
公开号：US03954806A
公开日：
无菌棉签
蓄电池恒温箱
19760504
液体测量2黑暗中文版
专利内容由知识产权出版社提供压铸机料筒的设计
摘要：A process for preparing dl-strigol, a potent seed germination agent, which comprises preparing the 2-bromomethyl-substituted methyl ester of 2, 6,6-trimethylcyclohex-1-en-3-one-1-carboxylic acid, alkylating and cyclizing the said compound with an excess of dimethyl sodiomalonate to obtain methyl 1,4-diketo-7,7-dimethyl-4,5,6,7- tetrahydroindane-2- carboxylate and its enol, subjecting the said keto and enol forms of the compound, in admixture, to alkylation with methyl bromoacetate followed by acidic hydrolysis and spontaneous decarboxylation to obtain methyl 1,4-diketo-7,7-dimethyl-4,5,6,7- tetrahydroindane-2-acetic acid, reducing the said acetic acid with a hydride reducing agent and recovering and separating the resulting 1,4- cis and trans-dihydroxy-7,7-dimethyl-4,5,6,7- tetrahydroindane-2-acetic acid lactones, formylating each of the cis and trans &ggr; lactones, alkylating the respective resulting hydroxy methylene lactones with bromobutenolide and recovering dl-strigol, dl-4'- epi-strigol, dl-4-epi- strigol and dl-4,4'-diepi-strigol.
New compounds useful as intermediates in the above process are also shown.
申请人：WISCONSIN ALUMNI RESEARCH FOUNDATION
代理人：Howard W. Bremer
>相片冲印
豫公网安备41160202000603
站长QQ:729038198
关于我们
投诉建议