CAS: 509-86-4; Heptabarbital

📜尿素,Alkaline Earth Salt Of/the/ Methylsulfuric Acid置于乙醇,Sodium Ethanolate体系中,化学反应生成 环庚比妥
参考文献:De756489
标题:De756489

专利信息

专利号:US-8993819-B2
优先权日:2011-07-12
标 题 :Process for preparing cycloheptene
发明人：TELES JOAQUIM HENRIQUE; LIMBACH MICHAEL; DEHN RICHARD; DEUERLEIN STEPHAN; DANZ MANUEL
权利人:TELES JOAQUIM HENRIQUE; LIMBACH MICHAEL; DEHN RICHARD; DEUERLEIN STEPHAN; DANZ MANUEL; BASF SE
摘要:The present invention provides a process for preparing cycloheptene and derivatives thereof by ring-closing metathesis of unsymmetric 1,8-dienes whose C—C double bond at the 8 position is nonterminal. Cycloheptene and the cycloheptanone, cycloheptylamine, cycloheptanecarbaldehyde, cycloheptanecarboxylic acid and cycloheptanecarbonyl chloride conversion products thereof, and the derivatives thereof, are important synthesis units for active ingredient compounds. The ring-closing metathesis is preferably performed as a reactive distillation. The unsymmetric 1,8-dienes for the ring-closing metathesis can be obtained by catalytic decarbonylation or oxidative decarboxylation from the corresponding unsaturated carboxylic acids or carboxylic acid derivatives.