CAS: 594-19-4; Tert-Butyllithium

上下游产品

tertiary butyl chloride n-butyllithium 1-((R)-Methanesulfinyl)-hex-1-yne lithiumtert-butylbenzene biphenyl tert-butyldichloromethylsilane tri-tert-butylcarbinol

氯代叔丁烷置于sodium,Lithium体系中,用 环己烷 作为反应溶剂,化学反应 2.0H,以79%的收率获得产物叔丁基锂
参考文献:用于合成有机锂试剂的高活性锂金属枝晶的制备
标题:用于合成有机锂试剂的高活性锂金属枝晶的制备
摘要:有机锂化学领域的一个长期存在的问题是需要一种高反应性的锂金属源,它可以模拟锂粉,但具有由廉价且容易获得的锂源新鲜制备的优势.在这里,我们报告了一种使用液氨的简单方便的活化方法,该方法以结晶锂枝晶的形式提供了一种新的锂金属源.锂枝晶被证明具有约.比通过原型机械活化方法产生的传统锂源的表面积大 100 倍.随着表面积的增加,锂枝晶显示出比锂粉显着提高的速率,锂粉是目前制备有机锂化合物的行业标准.
DOI:10.1021/jacs.2C07207

专利信息

专利号:US-8822702-B2
优先权日:2002-12-20
标 题 :Synthesis of amines and intermediates for the synthesis thereof
发明人：BERENS ULRICH; DOSENBACH OLIVER; SPRENGER DANIEL
权利人:BERENS ULRICH; DOSENBACH OLIVER; SPRENGER DANIEL; BASF SE
摘要:The invention relates in a first embodiment to a method for the manufacture of esters of the formula I, n nor especially of amides of the formula II,n n nwherein the symbols have the meanings given in the specification, as well as other intermediates and compounds useful in the synthesis of tryptamines and other substances mentioned in the title. The synthesis methods and intermediates are useful in the synthesis of pharmaceuticals.

专利号:US-11661406-B2
优先权日:2018-08-13
标 题 :Method for producing intermediate useful for synthesis of SGLT inhibitor
发明人：LI QING RI; YOON HEE KYOON
权利人:DAEWOONG PHARMACEUTICAL CO LTD
摘要:A method of preparing an intermediate useful for the synthesis of a diphenylmethane derivative that can be used as an SGLT inhibitor is described. A method of synthesizing a compound of Formula 7 can address problems of existing synthesis processes requiring the synthesis of the Grignard reagent and management of related substances. In addition, the method can minimize the generation of related substances, and thus does not require reprocessing of reaction products, thereby simplifying the process. Accordingly, the production yield of a diphenylmethane derivative can be maximized.

专利号:US-11548898-B2
优先权日:2017-07-06
标题 :Synthesis of halichondrins
发明人：KISHI YOSHITO; AI YANRAN; YE NING; WANG QIAOYI; YAHATA KENZO; ISO Kentaro; NAINI SANTHOSH REDDY; YAMASHITA SHUJI; LEE JIHOON; OHASHI ISAO; FUKUYAMA TAKASHI
权利人:HARVARD COLLEGE; EISAI R&D MAN CO LTD
摘要:The present invention provides methods for the synthesis of ketones involving a Ni/Zr-mediated coupling reaction. The Ni/Zr-mediated ketolization reactions can be used in the synthesis of halichondrins (e.g., halichondrin A, B, C; homohalichondrin A, B, C; norhalichondrin A, B, C), and analogs thereof. Therefore, the present invention also provides synthetic methods useful for the synthesis of halichondrins, and analogs thereof. Also provided herein are compounds (i.e., intermediates) useful in the synthesis of halichondrins, and analogs thereof. In particular, the present invention provides methods and compounds useful in the synthesis of compound of Formula (H3-A).

专利号:US-5220016-A
优先权日:1991-07-29
标 题:Synthesis of navelbine analogs
发明人：MAGNUS PHILIP D; THURSTON LEE S
权利人:UNIV TEXAS
摘要:The invention is a de novo synthesis of the norcatharanthine moiety of navelbine. The synthesis includes condensing a Grignard reagent prepared from an amine-protected R(+)-piperidinyl methanol with an N-protected 2-methoxyoxalyl indole. The indole N-protecting group is removed to provide a 2-methoxyindole hydroxy ester which is coupled to vindoline. After removal of the amineprotecting group from the piperidinyl group, ring closure to the indole moiety provides dihydrodesethyl navelbine. Other derivatives and analogs of navelbine with potential clinical applications in cancer chemotherapy may be readily synthesized. The synthesis opens a route to a wide variety of navelbine modifications, including modifications at or near the tryptamine bridge.

专利号:US-2016031800-A1
优先权日:2013-03-14
标 题:Synthesis of chiral kynurenine compounds and intermediates
发明人：TRETYAKOV ALEXANDER; DROUET KEITH E; SANDERS WILLIAM
权利人:VISTAGEN THERAPEUTICS INC
摘要:Provided are methods for the synthesis of compounds including chiral kynurenine compounds, intermediates useful for the synthesis thereof, and related compounds. For example, methods are provided for the synthesis of L-4-chlorokynurenine.

专利号:US-11891351-B2
优先权日:2020-03-20
标 题 :Synthesis of capsaicin derivatives
发明人：LAGER ERIK
权利人:AXICHEM AS
摘要:The present invention relates to the synthesis of capsaicin derivatives, specifically to the synthesis of 6-heptyne derivatives of capsaicin.