The asymmetric ketone-tert-butanesulfinyl (t-BS) imine pinacol-type reductive coupling promoted by SmI2 is described. Trans-1,2-vicinal amino alcohols were formed predominantly in excellent er and high dr. The stereochemical outcome provided evidence for a radical mechanism for SmI2-induced reductive couplings of t-BS imines.
Direct and chemoselective conversion of carboxylic acids into aldehydes
作者:Tamotsu Fujisawa、Toshiki Mori、Shoichi Tsuge、Toshio Sato
DOI:10.1016/s0040-4039(00)81704-9
日期:——
A new method for the directconversion of carboxylicacids to aldehydes using N,N-dimethylchloromethyleniminium chloride and lithium tri-t-butoxyaluminum hydride was established. This method provides a convenient way for the chemoselective reduction of carboxylicacids even with such a functional group as halide, ester, nitrile, olefin, and ketone.
COMPOSITION FOR REMOVAL OF SULPHUR-CONTAINING COMPOUNDS
申请人:Kuraray Co., Ltd.
公开号:EP3121251A1
公开(公告)日:2017-01-25
Disclosed is a composition capable of removing safely and efficiently a sulfur-containing compound contained in a hydrocarbon, particularly hydrogen sulfide, an -SH group-containing compound, or a mixture thereof. Provided is a composition for removal of a sulfur-containing compound in a hydrocarbon, the sulfur-containing compound being hydrogen sulfide, an -SH group-containing compound or a mixture thereof: the composition containing a dialdehyde having 6 to 16 carbon atoms as an active ingredient.
COMPOSITION FOR REMOVING SULFUR-CONTAINING COMPOUNDS
申请人:Kuraray Co., Ltd.
公开号:EP3252129A1
公开(公告)日:2017-12-06
Provided is a composition capable of safely and efficiently removing a sulfur-containing compound, especially hydrogen sulfide, an -SH group-containing compound or a mixture thereof contained in a hydrocarbon, and not causing metal corrosion in devices. The composition is for removing a sulfur-containing compound in a hydrocarbon, wherein the sulfur-containing compound is hydrogen sulfide, an -SH group-containing compound or a mixture thereof, and the composition contains a dialdehyde having 6 to 16 carbon atoms and a polyalkylene glycol.
A method for suppressing metal corrosion attributable to a compound having an SH structure contained in a hydrocarbon, including adding at least one aldehyde selected from the group consisting of a monoaldehyde having 4 or more carbon atoms and a dialdehyde having 3 or more carbon atoms, to the hydrocarbon.
一种抑制可归因于碳氢化合物中所含 SH 结构化合物的金属腐蚀的方法,包括向碳氢化合物中添加至少一种醛,该醛选自具有 4 个或更多碳原子的单醛和具有 3 个或更多碳原子的二醛所组成的组。
COMPOSITION FOR REMOVAL OF SULFUR-CONTAINING COMPOUND
申请人:Kuraray Co., Ltd.
公开号:EP3546052A1
公开(公告)日:2019-10-02
Provided is a composition for removal of a sulfur-containing compound in a liquid or gas, wherein the sulfur-containing compound is at least one selected from the group consisting of hydrogen sulfide and a compound containing an -SH group, and the composition contains an aldehyde and a polyvalent amine represented by the general formula (1).