CAS: 5436-21-5; 4,4-Dimethoxybutan-2-One

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4,4-Dimethoxybut-1-Ene置于叔丁基过氧化氢,C21H19N5Pd(2+)*2Bf4(1-)体系中,用 癸烷,乙腈 作为反应溶剂,化学反应 24.0H,以95%的收率获得产物4,4-二甲氧基-2-丁酮
参考文献:电子不对称的退火吡啶基-中碳卡宾支架:在pd(II)催化的wacker型烯烃氧化中的应用
标题:电子不对称的退火吡啶基-中碳卡宾支架:在pd(II)催化的wacker型烯烃氧化中的应用
摘要:吡啶基-Mesoionic卡宾配体(apmic)的两个供体模块具有不同的σ键和π键特性,导致其电子不对称.具有apmic的pd(II)配合物1可以催化多种末端烯烃氧化为相应的甲基酮,在乙腈中的产率高至优异.提出催化反应通过顺过氧化钯和随后的限速1,2-氢化物转移进行,这得到动力学研究的支持.apmic的电子不对称性在pd处提供了定义明确的协调范围.反应物在金属中心的优先排列,其特征是烯烃转化为吡啶基模块,T过氧化丁基可转化为卡宾.这种布置通过在pd,吡啶基组件和垂直于pd(apmic)平面的烯烃上的相容轨道铺平了π-离域作用,从而增加了稳定性.在另一种排列方式中不存在π-相互作用,其中烯烃被转化为卡宾.密度泛函理论研究表明,相配的轨道重叠比其他轨道重叠更为可取.这项工作为apmic的电子不对称提供了轨道描述.
DOI:10.1021/acscatal.0C02729

专利信息

专利号:WO-2025053792-A1
优先权日:2023-09-06
标题:Collective synthesis of phantomolin family through total synthesis of the sesquiterpene lactone molephantin
发明人：CHIBA SHUNSUKE; PATOURET REMI HENRI LOUIS; LI HOI YEUNG; LAI SOAK KUAN
权利人:UNIV NANYANG TECH
摘要:Disclosed herein are processes to generate an intermediate in the total synthesis of (+)- molephantin or a derivative thereof, and a total synthesis of (+)-molephantin or a derivative thereof. Also disclosed herein are methods of forming a compound of formula XIV and of forming a compound of formula XV, wherein compound of formula XIV and compound of formula XV are as defined in the description.

专利号:US-4866175-A
优先权日:1966-11-08
标 题 :Novel process for the synthesis of quinoxaline and benzimidazole-N-oxides
发明人：ISSIDORIDES COSTAS H; HADDADIN MAKHLUF J
权利人:RESEARCH CORP
摘要:The synthesis of quinoxaline and benzimidazole-N-oxides and of ester amd amide derivatives of 3-hydroxy-2-quinoxalinecarboxylic acid by a movel process consisting of the reaction between a benzofuroxan and an activated methylene-containing compound under basic conditions.

专利号:US-5576426-A
优先权日:1988-08-30
标 题:Aldolase catalyzed stereoselective synthesis of arabinohexulose, xyloheptulose, threohexulose and xylohexulose
发明人：WONG CHI-HUEY; DURRWACHTER JOHN R; PEDERSON RICHARD L
权利人:SEARLE & CO
摘要:The present invention relates to aldolase catalyzed stereo-selective synthesis of sugars and compositions of matter comprising arabinohexulose, xyloheptulose, threohexulose, and xylohexulose.

专利号:US-6777562-B1
优先权日:2003-02-19
标 题:Preparation of a trans-calanolide ketone intermediate and chiral separation of calanolide alcohols to give racemic calanolide A
发明人：DAUGS EDWARD D
权利人:DOW GLOBAL TECHNOLOGIES INC
摘要:The method of the invention comprises a process for synthesizing a trans-calanolide A ketone intermediate used in the synthesis of racemic trans-calanolide A. The invention further comprises a method for removing a racemic calanolide B diastereomer from a mixture of calanolide A and calanolide B diastereomers formed in the last step of the synthesis of calanolide A by crystallization.

专利号:WO-2016118586-A1
优先权日:2015-01-20
标 题 :Lowcost, high yield synthesis of nevirapine
发明人：AHMAD SAEED; GUPTON FRANK; VERGHESES JENSON; MCQUADE TYLER
权利人:UNIV VIRGINIA COMMONWEALTH
摘要:Improved methods of producing the HIV drug substance, nevirapine are provided. The methods employ a cost effective and high yield synthetic methods for preparing the nevirapine building block 2-chloro-3-amino-4-picoline (CAPIC) and 2-cyclopropyl amino nicotinate (Me-CAN), and improvements in other steps of nevirapine synthesis.

专利号:US-10053420-B2
优先权日:2015-01-30
标 题 :Processes for the preparation of compounds, such as 3-arylbutanals, useful in the synthesis of medetomidine
发明人：EKLUND LARS; EEK MARGUS; EKAMBARAM RAMESH; MAASALU ANTS
权利人:CAMBREX KARLSKOGA AB
摘要:There is provided a process for the preparation of a compound of formula (I) as defined herein, wherein said process comprises reacting a compound of formula (II) as defined s herein with one or more suitable Vilsmeier reagent.