CAS: 1609-86-5; Tert-Butylisocyanate

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CAS号169772-25-2 (叔-丁基氨基)(氧代)乙酸 | CAS号124-38-9 二氧化碳 | CAS号75-64-9 叔丁胺 | CAS号754-10-9 三甲基乙酰胺 | CAS号2472-88-0 四丁基硫酸铵 | CAS号32315-10-9 三光气 | CAS号507-19-7 溴代叔丁烷 | CAS号29740-67-8 Propanamide,N-h... | CAS号24424-99-5 二碳酸二叔丁酯 | CAS号630-18-2 三甲基乙腈 | CAS号108168-88-3 N-(叔-丁基)-2-氰基乙酰胺 | CAS号106154-54-5 1-(benzenesulfo... | CAS号1118-32-7 Propanamide,N-(... | CAS号104847-07-6 N-叔丁基-2-甲基苯甲酰胺 | CAS号75-64-9 叔丁胺 | CAS号762-84-5 N-叔丁基乙酰胺 | CAS号5336-24-3 N,N'-二(叔丁基)脲 | CAS号5894-65-5 N-(叔-丁基)苯甲酰胺 | CAS号253175-42-7 1-Piperazinecar...

N-(Tert-Butyl)-N'-Nitrocarbodiimide 以 乙腈 用作溶剂,化学反应 0.5H,反应生成叔丁基异氰酸酯
参考文献:N-烷基-N'-(三甲基甲硅烷基)碳二亚胺与硝化剂的反应.N-(叔丁基)-N'-硝基碳二亚胺的合成
标题:N-烷基-N'-(三甲基甲硅烷基)碳二亚胺与硝化剂的反应.N-(叔丁基)-N'-硝基碳二亚胺的合成
摘要:N-Alk-N'-(三甲基甲硅烷基)碳二亚胺(Alk = Me,But)与硝化剂(N2O5,(No2)2Sif6)反应得到烷基(硝基)氰胺和n-烷基-N'-硝基碳二亚胺.产物比例取决于反应条件.N-(叔丁基)-N'-硝基碳二亚胺可以几乎纯的形式获得.该化合物在低于 10 oc 的温度下是稳定的.其结构经 1н,13C 和 14N NMR 确证.N-(叔丁基)-N'-硝基碳二亚胺与胺的反应为制备n-烷基(芳基)-取代的n'-(叔丁基)-N″-硝基胍提供了一条新途径.
Doi:10.1007/s11172-018-2037-3

专利信息

专利号:US-6924385-B2
优先权日:2002-11-18
标 题:Method for synthesis of aliphatic isocyanates from aromatic isocyanates
发明人：LETTMANN CHRISTIAN; KOHLSTRUK STEPHAN; STOCHNIOL GUIDO; SPYROU EMMANOUIL
权利人:DEGUSSA
摘要:The invention relates to a method for synthesis of aliphatic isocyanates from aromatic isocyanates in substantially 3 stages. In particular, the invention relates to a method for synthesis of bis{4-isocyanatocyclohexyl}methane (H 12 MDI) from bis{4-isocyanatophenyl}methane (MDI). More especially, the invention relates to a method for synthesis of H 12 MDI with a trans-trans isomer content of <30%, preferably of <20%, particularly preferably of 5 to 15%.

专利号:US-12338202-B2
优先权日:2021-09-10
标 题 :One pot synthesis of urea (meth)acrylates
发明人：BESTGEN SEBASTIAN; BEYER SILVIA
权利人:EVONIK OPERATIONS GMBH
摘要:A one-pot synthesis of polymerizable and acyclic urea (meth)acrylates, preferably mono(meth)acrylates, can be performed via in-situ synthesis of urea alcohols or amines followed by direct reaction with a (meth)acrylate reactive diluent. The urea alcohol/amine is obtained from isocyanates and alcohols, amines, or hydroxyamines. Subsequently, the reaction with the (meth)acrylate reactive diluent takes place and the urea (meth)acrylate is directly obtained either in solution with the reactive diluent, or as a pure material after removal of the reactive diluent.

专利号:US-9994508-B2
优先权日:2012-12-11
标 题:Versatile and functionalised intermediates for the synthesis of vitamin D and novel vitamin D derivatives
发明人：LOPEZ PEREZ BORJA; SIGUEIRO PONTE RITA; MAESTRO SAAVEDRA MIGUEL A; MOURINO MOSQUERA ANTONIO
权利人:ENDOTHERM GMBH
摘要:Novel intermediates for the complete synthesis of vitamin D are provided that allow a great versatility of functional groups in the final vitamin derivatives. Vitamin derivatives that are epimeric in position 3 and vitamin derivatives with a wide range of functionalities in position 18, including compounds with isotopic labelling are provided.

专利号:US-11655255-B2
优先权日:2022-10-17
标题 :Method for catalytic asymmetric synthesis of phosphorus-stereogenic (P-stereogenic) nucleoside derivative and catalyst used therein
发明人：ZHANG WANBIN; WANG MO; ZHANG LU; HUO XIAOHONG; ZHANG ZHENFENG; YUAN QIANJIA; CHEN JIANZHONG
权利人:SPH NO 1 BIOCHEMICAL & PHARMACEUTICAL CO LTD; UNIV SHANGHAI JIAOTONG
摘要:A method for catalytic asymmetric synthesis of a phosphorus-stereogenic (P-stereogenic) nucleoside derivative of formula (3) and a catalyst used therein. The P-stereogenic nucleoside derivative (3) can be hydrolyzed to obtain remdesivir. Specifically, a nucleoside and phosphoryl chloride are subjected to asymmetric reaction under the catalysis of a chiral bicyclic imidazole catalyst in the presence of a base to produce the P-stereogenic nucleoside derivative of formula (3)

专利号:US-4879389-A
优先权日:1986-06-25
标题:Chiral phosphinopyrrolidine compounds and their use for asymmetric synthesis of optically active compounds
发明人：ACHIWA KAZUO
权利人:ACHIWA KAZUO
摘要:New chiral phosphinopyrrolidine compounds of the general formula: (I) or (I') wherein R1 is a hydrogen atom, -COR, -COOR, -CONHR or -SO2-R where R is an alkyl or aryl group, R2 and R3 each represents independently an aryl group which may have a substituent or substituents, and R4 and R5 each represents independently an aliphatic or cycloaliphatic hydrocarbyl group which may have a substituent or substituents, as well as the use of these compounds as ligand for a metal complex catalyst for asymmetric synthesis of optically active compounds. The new chiral phosphinopyrrolidine compounds are useful ligands which attain both of high optical yield and high reaction efficiency in catalytic asymmetric reduction.

专利号:US-7737284-B2
优先权日:2001-01-18
标题 :Synthesis of temozolomide and analogs
发明人：KUO SHEN-CHUN; MAS JANET L; HOU DONALD CHEN-TUNG
权利人:SCHERING PLOUGH CORP
摘要:This invention relates to a novel process for the synthesis of Temozolomide, an antitumor compound, and analogs, and to intermediates useful in this novel process.