专利号:CA-2640585-A1 优先权日:2003-02-05 标题 :Synthesis of 2-butyl-3-(2'-(1-trityl-1h-tetrazol-5-yl)biphenyl-4-yl)-1,3-diazaspirol{4,4}-non-ene-4-one
专利号:US-2025034074-A1 优先权日:2021-11-25 标题:Process for preparing a cyclic diene 发明人:JACOBY DENIS; CHAPPUIS SIMONE; KELLER FABRICE 权利人:FIRMENICH & CIE 摘要:The present invention relates to the field of organic synthesis and more specifically it concerns a process for preparing compound of formula (I) comprising the reaction of a compound of the formula (II) with a base having a boiling point superior to the boiling point of the compound of formula (I). Moreover, the compound of formula (I) and the compound of formula (II) are also part of the invention.
专利号:US-2024327367-A1 优先权日:2021-07-30 标 题 :Process for preparing a oxacylohexane or oxacylopentane derivative 发明人:DAPSENS PIERRE-YVES; VILCOQ LEA 权利人:FIRMENICH & CIE 摘要:The present invention relates to the field of organic synthesis and, more specifically, it concerns a process for the preparation of a cycloether of formula (I) comprising the cyclisation of compound of formula (II) performed in the presence of heterogenous acidic catalyst.
专利号:CN-1730585-A 优先权日:2005-06-16 标题 :Direct synthesis method of abietic acid sucrose ester using rosin and sucrose
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