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邻羧基苯甲醛置于水,Formamide体系中,化学反应 5.0H,以62%的收率获得产物异吲哚啉-1-酮
参考文献:无需外部氢即可通过含氧羧酸的环胺化反应轻松反应生成n-(未)取代内酰胺的直接途径
标题:无需外部氢即可通过含氧羧酸的环胺化反应轻松反应生成n-(未)取代内酰胺的直接途径
摘要:内酰胺在生物活性天然产物和药物制剂中享有特权,并在功能材料中得到广泛应用.这项研究提出了一种新颖的通用方法,无需催化剂或外部氢就可从含氧羧酸直接合成内酰胺.该方法涉及从水诱导的甲酰胺中原位释放甲酸,以促进有效的环胺化.水还抑制副产物的形成.通过模型实验和密度泛函理论计算的结合阐明了这种非常规途径,其中发现环状亚胺(5-甲基-3,4-二氢-2-吡咯烷酮及其互变异构结构)是形成内酰胺的有利中间体.与包括级联还原胺化和环化的常规方法形成对比.n-未取代和n-取代的内酰胺.
DOI:10.1002/cssc.201901780

专利信息

专利号:US-11542269-B2
优先权日:2018-01-03
标 题:Prins reaction and compounds useful in the synthesis of halichondrin macrolides and analogs thereof
发明人：CHOI HYEONG-WOOK; FANG FRANCIS G
权利人:EISAI R&D MAN CO LTD
摘要:The invention provides methods utilizing Prins reaction in the preparation of compounds that may be useful as intermediates in the synthesis of halichondrin macrolides and analogs thereof. The invention also provides compounds that may be useful as intermediates in the synthesis of a halichondrin macrolides and methods for preparing the same.

专利号:US-10913749-B2
优先权日:2015-05-07
标 题 :Macrocyclization reactions and intermediates and other fragments useful in the synthesis of halichondrin macrolides
发明人：FANG FRANCIS G; KIM DAE-SHIK; CHOI HYEONG-WOOK; CHASE CHARLES E
权利人:EISAI R&D MAN CO LTD
摘要:The invention provides methods for the synthesis of a halichondrin macrolides through a macrocyclization strategy. The macrocyclization strategy of the present invention involves subjecting a non-macrocyclic intermediate to a carbon-carbon bond-forming reaction (e.g., an olefination reaction (e.g., Horner-Wadsworth-Emmons olefination), catalytic Ring-Closing Olefin Metathesis, or Nozaki-Hiyama-Kishi reaction) to afford a macrocyclic macrolide. The invention also provides compounds useful as intermediates in the synthesis of a halichondrin macrolides and methods for preparing the same.

专利号:US-11136335-B2
优先权日:2016-06-30
标题:Prins reaction and intermediates useful in the synthesis of halichondrin macrolides and analogs thereof
发明人：CHASE CHARLES E; CHOI HYEONG-WOOK; ENDO ATSUSHI; FANG FRANCIS G; KIM DAE-SHIK
权利人:EISAI R&D MAN CO LTD
摘要:The invention provides methods for the synthesis of a halichondrin macrolides or analogs thereof through a cyclization reaction strategy. The strategy of the present invention involves subjecting an intermediate to Prins reaction conditions to afford a macrolide. The invention also provides compounds useful as intermediates in the synthesis of a halichondrin macrolides or analogs thereof and methods for preparing the same.

专利号:US-2006167025-A1
优先权日:2004-12-22
标 题:Tricyclic amino alcohols, processes for synthesis of same and use of same as anti-inflammatory drugs
发明人：BERGER MARKUS; SCHMEES NORBERT; SCHAECKE HEIKE; BAURLE STEFAN; REHWINKEL HARTMUT; MENGEL ANNE; KROLIKIEWICZ KONRAD; GROSSBACH DANJA; VOIGTLAENDER DAVID
权利人:BERGER MARKUS; SCHMEES NORBERT; SCHAECKE HEIKE; BAURLE STEFAN; REHWINKEL HARTMUT; MENGEL ANNE; KROLIKIEWICZ KONRAD; GROSSBACH DANJA; VOIGTLAENDER DAVID
摘要:The invention relates to tricyclic amino alcohols of general formula (I) n nmethod for synthesis of same and use of same as anti-inflammatory agents.

专利号:US-6159673-A
优先权日:1996-07-17
标 题:Oxonol compound, light-sensitive material and process for the synthesis of oxonol compound
发明人：NISHIGAKI JUNJI; DEGUCHI YASUAKI
权利人:FUJI PHOTO FILM CO LTD
摘要:An oxonol compound is represented by the following formula (I): in which Z is an atomic group that forms a cyclic amide ring; each of W1 and W2 independently is an atomic group that forms an acidic nucleus ring; and M is a cation. Other oxonol compounds, a light-sensitive material containing an oxonol compound and a process for the synthesis of an oxonol compound are also disclosed.

专利号:US-2014255328-A1
优先权日:2013-03-11
标 题:Hydrothermal Synthesis of Zinc Phlogopite
发明人：MCGUIRE MEAGHAN CLARK; BULL IVOR; JOHNSON GEOFFREY MARK
权利人:BASF SE
摘要:This invention relates to a synthetically derived zinc phlogopite platelets, of superior platelet diameter, effect pigments comprising such synthetically derived platelets and methods of forming said substrates. More specifically the disclosure describes an improved hydrothermal synthesis of zinc phlogopite suitable as a platelets for interference pigments, barrier and flame retardant applications.