Isomerization of Propargylic Alcohols into α,β-Unsaturated Carbonyl Compounds Catalyzed by the Sixteen-Electron Allyl-Ruthenium(II) Complex [Ru(η3-2-C3H4Me)(CO)(dppf)][SbF6]
作者:Victorio Cadierno、Sergio E. García-Garrido、José Gimeno
DOI:10.1002/adsc.200505294
日期:2006.1
(η3-allyl)-ruthenium(II) complex [Ru(η3-2-C3H4Me)(CO)(dppf)][SbF6] is an efficient catalyst for the regioselective isomerization of terminal propargylic alcohols HCCCR1R2(OH) into α,β-unsaturatedaldehydes R1R2CCHCHO or ketones R3R4CC(R1)COMe (if R2=CHR3R4) under mild conditions. This complex has been also used as catalyst for the preparation of conjugated 1,3-enynes via dehydration of propargylic alcohols
16-E -(η 3 -烯丙基) -钌(II)配合物的[Ru(η 3 -2-C 3 H ^ 4 ME)(CO)(DPPF)] [的SbF 6 ]是用于区域选择性异构化的有效催化剂在温和条件下将末端炔丙醇HCCCR 1 R 2(OH)转变为α,β-不饱和醛R 1 R 2 CCHCHO或酮R 3 R 4 CC(R 1)COMe(如果R 2 = CHR 3 R 4)。这种复杂的也已用作催化剂用于制备缀合的1,3-烯炔的经由 炔丙醇的脱水。
A General Route to Fully Terminally tert-Butylated Linear Polyenes
作者:Dagmar Klein、Pinar Kiliçkiran、Cornelia Mlynek、Henning Hopf、Ina Dix、Peter G. Jones
DOI:10.1002/chem.201000019
日期:2010.9.10
from the readily available α,β‐unsaturated ketone, 3‐tert‐butyl‐4,4‐dimethyl‐2‐pentenal, higher vinylogues, and fullyterminally tert‐butylated polyolefins with up to 13 consecutive conjugated double bonds have been prepared by either McMurry dimerization or Wittig chain‐elongation routes. The highly unsaturated conjugated π systems, which show a remarkable stability, have been characterized by spectroscopic
作者:Pinar Kiliçkiran、Henning Hopf、Ina Dix、Peter G. Jones
DOI:10.1002/ejoc.201000018
日期:2010.7
diastereomers. Whereas 22 is inert towards sodium sulfide the higher vinylogs/ethynylogs 23–25 furnished the novel thiophene derivatives 28–31. The structures of several (22–25, 28, 29) of the new highly unsaturated compounds were determined by single-crystal X-ray structural analysis.
COMPOSITION FOR REMOVING SULFUR-CONTAINING COMPOUND
申请人:Kuraray Co., Ltd.
公开号:EP3476478A1
公开(公告)日:2019-05-01
Provided is a composition for removing a sulfur-containing compound present in liquid or vapor, the sulfur-containing compound being hydrogen sulfide, an -SH group-containing compound or a mixture thereof, the composition containing an α,β-unsaturated aldehyde represented by the following general formula (1) as an active ingredient:
wherein R1 and R2 each independently represent an alkyl group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms or an aryl group having 6 to 12 carbon atoms, or are connected to each other to represent an alkylene group having 2 to 6 carbon atoms; and R3 represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, or is connected to R1 to represent an alkylene group having 2 to 6 carbon atoms.
Provided is a composition for removing iron sulfide, containing, as an active ingredient, an α,β-unsaturated aldehyde represented by the following general formula (1):
wherein R1 to R3 each independently represent a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, or an aryl group having 6 to 12 carbon atoms, provided that R1 may be connected to R2 or R3, to constitute an alkylene group having 2 to 6 carbon atoms; and that R1 and R2 are not a hydrogen atom at the same time.