Ruthenium-Catalyzed Addition of Carboxylic Acids to Propargylic Alcohols: An Easy Route to<i>O</i>-Dienyl Esters and Their Tandem Atom-Transfer Radical Polymerization
作者:Rajesh K. Jena、Uttam K. Das、Arijit Ghorai、Manish Bhattacharjee
DOI:10.1002/ejoc.201601091
日期:2016.12
A ruthenium-catalyzedone-pot synthesis of O-dienyl esters through the regio- and stereoselective addition of carboxylic acids to propargylic alcohols, and the atom-transfer radical polymerisation of the products have been developed. The initial addition reaction takes place through the formation of a carbon–oxygen bond followed by dehydration.
A [3.3]Sigmatropic Rearrangement of α,β-Unsaturated Fischer Chromium Carbenes: Synthesis of Alkynol and Dienol Esters
作者:Björn C. Söderberg、Shannon N. O'Neil、Angela C. Chisnell、Jian Liu
DOI:10.1016/s0040-4020(00)00216-7
日期:2000.7
A novel [3.3]sigmatropic rearrangement of in situ formed alpha,beta-unsaturated Fischer acyloxy carbenes forming alkynol esters is described. For example, reaction of tetramethylammonium pentacarbonyl(1-oxo-2-butenyl)chromate(1-) (4) with 4-methoxybenzoyl chloride gave 2-methyl-3-butyn-2-yl 4-methoxybenzoate (8) in 32% yield. In addition to the rearrangement products, dienol esters formed by a formal beta-hydride elimination-reductive elimination sequence were usually isolated. In the above example, 3-methylbuta-1,3-dien-1-yl 4-methoxybenzoate (9) was obtained (16%) as the side product. (C) 2000 Elsevier Science Ltd. All rights reserved.
[(<i>para</i>-Cymene)Ru(dppp)Cl][PF<sub>6</sub>]-Catalysed Stereospecific Synthesis of<i>O</i>-Dienyl Esters, and Evaluation of the Anticancer Activity of a Long-Chain Fatty Acid<i>O</i>-Dienyl Ester
作者:Rajesh K. Jena、Y. Rajesh、Mahitosh Mandal、Manish Bhattacharjee
DOI:10.1002/ejoc.201601557
日期:2017.3.17
Z‐Configured O‐dienyl esters have been obtained through the reaction of propargylic alcohols with carboxylic acids, including fatty acids, catalysed by [(η6‐p‐cymene)Ru(η2‐dppp)Cl]+. The anticanceractivity of one of the fatty acid dienyl esters has been investigated.
ž -构型ø -dienyl酯已经通过炔丙醇与羧酸,包括脂肪酸,通过催化的反应获得的[(η 6 - p -cymene)的Ru(η 2 -dppp)CL] +。已经研究了脂肪酸二烯基酯之一的抗癌活性。