<i>N</i>,<i>N</i>‘-Ditosylhydrazine: A Convenient Reagent for Facile Synthesis of Diazoacetates
作者:Tatsuya Toma、Jun Shimokawa、Tohru Fukuyama
DOI:10.1021/ol701432k
日期:2007.8.1
A novel entry to the synthesis of diazoacetates is disclosed. A variety of diazoacetates were synthesized from the corresponding bromoacetates by treatment with N,N'-ditosylhydrazine in moderate to high yields. Ease of operation with the stable crystalline reagent as well as a short reaction time offer a useful alternative to the conventional methods.
Regio- and Stereoselective Copper(II)-Catalyzed Hydrosilylation of Activated Allenes in Water: Access to Vinylsilanes
作者:Srinath Pashikanti、Joseph A. Calderone、Matthew K. Nguyen、Christopher D. Sibley、Webster L. Santos
DOI:10.1021/acs.orglett.6b00981
日期:2016.5.20
By using catalytic amounts of copper(II), 4-picoline, and dimethylphenylsilylpinacol borane, a series of allenoates were silylated on the β carbon in good to excellent yields and high (E)-selectivity. The mild and efficient silylation method is conducted in water under atmospheric conditions to afford vinylsilanes.
Synthesis of 1,4-Enamino Ketones by [3,3]-Rearrangements of Dialkenylhydroxylamines
作者:Wiktoria H. Pecak、Jongwoo Son、Amy J. Burnstine、Laura L. Anderson
DOI:10.1021/ol501230e
日期:2014.7.3
4-enamino ketones has been achieved through the [3,3]-rearrangement of dialkenylhydroxylamines generated from the addition of N-alkenylnitrones to electron-deficient allenes. The mild conditions required for this reaction, and the simultaneous installation of a fluorenyl imine N-protecting group as a consequence of the rearrangement, avoid spontaneous cyclization of the 1,4-enamino ketones to form the
[EN] TRIFUNCTIONAL ADDITIVES FOR ELECTROLYTE COMPOSITION FOR LITHIUM BATTERIES<br/>[FR] ADDITIFS TRIFONCTIONNELS POUR COMPOSITION ÉLECTROLYTIQUE POUR BATTERIES AU LITHIUM
申请人:BASF SE
公开号:WO2018134251A1
公开(公告)日:2018-07-26
An electrolyte composition containing (i) at least one aprotic organic solvent; (ii) at least one conducting salt; (iii) at least one compound of formula (I); and (iv) optionally one or more additives.
Tandem Cyclization in Ruthenium Vinylidene Complexes with Two Ester Groups
作者:Wei-Chen Chang、Cheng-Wei Cheng、Hao-Wei Ma、Ying-Chih Lin、Yi-Hong Liu
DOI:10.1021/om200143e
日期:2011.5.23
complexes. Additionally, for the simple furyl complex containing an O-benzyl group, a 1,3-migration of the benzyl group is observed to yield a lactone product and a Claisenrearrangement is also observed in analogous complexes with O-allyl or O-propargyl groups.