Efficient
<i>O</i>
‐Acylation of Alcohols and Phenol Using Cp
<sub>2</sub>
TiCl as a Reaction Promoter
作者:María Jesús Durán‐Peña、José Manuel Botubol‐Ares、James R. Hanson、Rosario Hernández‐Galán、Isidro G. Collado
DOI:10.1002/ejoc.201600496
日期:2016.7
secondary, and tertiary alcohols, and phenol, into the corresponding esters at room temperature. The method uses a titanium(III) species generated from a substoichiometric amount of titanocene dichloride together with manganese(0) as a reductant, as well as methylene diiodide. It involves a transesterification from an ethyl ester, or a reaction with an acyl chloride. A radical mechanism is proposed
Titanium carbenoid-mediated cyclopropanation of allylic alcohols: selectivity and mechanism
作者:M. J. Durán-Peña、J. M. Botubol-Ares、J. R. Hanson、R. Hernández-Galán、I. G. Collado
DOI:10.1039/c5ob00544b
日期:——
A new method for the chemo- and stereoselective conversion of allylic alcohols into the corresponding cyclopropane derivatives has been developed. The cyclopropanation reaction was carried out with an unprecedented titanium carbenoid generated in situ from Nugent's reagent, manganese and methylene diiodide. The reaction involving the participation of an allylic hydroxyl group, proceeded with conservation
Direct facile tetrahydrofuranylation of alcohols through radical coupling with (Bu4N)2S2O8
作者:Jae Chul Jung、Hyun Chul Choi、Yong Hae Kim
DOI:10.1016/s0040-4039(00)73641-0
日期:1993.5
Primary, secondary and tertiary alcohols can be converted in excellent yields into their 2-tetrahydrofuranyl-ethers in the presence of n-tetrabutylammonium peroxydisulfate1 under nearly neutral condition in tetrahydrofuran.
KRUSE C. G.; DERT V.; JONKERS F. L.; GEN A. VAN DER, REC. TRAV. CHIM. PAYS-BAS, 1979, 98, NO 6, 371-380
作者:KRUSE C. G.、 DERT V.、 JONKERS F. L.、 GEN A. VAN DER
DOI:——
日期:——
Unexpected Mild Protection of Alcohols as 2-<i>O</i>-THF and 2-<i>O</i>-THP Ethers Catalysed by Cp<sub>2</sub>TiCl Reveal an Intriguing Role of the Solvent in the Single-Electron Transfer Reaction
作者:María Jesús Durán-Peña、José Manuel Botubol-Ares、James R. Hanson、Rosario Hernández-Galán、Isidro G. Collado
DOI:10.1002/ejoc.201500869
日期:2015.10
) dichloride:acetonitrile adduct together with manganese(0) as a reductant and bromoform in THF or THP as the solvent. A radical mechanism is proposed for this transformation revealing an intriguingrole of the solvent in the single-electrontransferreactionscatalysed by the low valent TiIII system.