181061-05-2Relevant academic research and scientific papers
Intramolecular additions of alcohols and carboxylic acids to inert olefins catalyzed by silver(I) triflate
Yang, Cai-Guang,Reich, Nicholas W.,Shi, Zhangjie,He, Chuan
, p. 4553 - 4556 (2007/10/03)
(Chemical Equation Presented) Intramolecular additions of hydroxyl or carboxyl groups to inert olefins catalyzed by simple silver(I) triflate are described. Good to excellent yields can be obtained for a range of substrates under relatively mild conditions. This reaction represents one of the simplest methods to construct cyclic ethers or lactones.
Molybdenum(II)- and tungsten(II)-catalyzed allylic substitution
Malkov, Andrei V.,Baxendale, Ian R.,Dvorak, Dalimil,Mansfield, Darren J.,Kocovsky, Pavel
, p. 2737 - 2750 (2007/10/03)
The molybdenum(II) complexes Mo(CO)5(OTf)2 (7a), [Mo(CO)4Br2]2 (8a), their tungsten(II) congeners 7b and 8b, and bimetallic complex Mo(CO)3(MeCN)2(SnCl3)Cl (9a) have been found to catalyze the C-C bond-forming allylic substitution with silyl enol ethers derived from β-dicarbonyls (e.g., 16 + 30 → 46) or from simple ketones (e.g., 16 + 32 → 50), aldehydes, and esters as nucleophiles under mild conditions (room temperature, 1-2 h). Methanol, as a prototype oxygen nucleophile, reacts in a similar fashion (e.g., 16 + MeOH → 43). Mechanistic and stereochemical experiments are indicative of Lewis-acid catalysis rather than a metal template-controlled process.
Lithium cobalt-bis-dicarbollide catalyzed substitution reactions of allylic acetates
Grieco, Paul A.,DuBay, William J.,Todd, Lee J.
, p. 8707 - 8710 (2007/10/03)
Lithium cobalt-bis-dicarbollide (1), in which the lithium is weakly coordinated to the Co(B9C2H11)2-1 anion, is an effective catalyst for the substitution of allylic acetates by a variety of nucleophiles.
