Syntheses of tetrahydropyrans by PPh3/CBr4 induced cyclization of acetals: Application to a synthesis of rose oxide
作者:A. Wagner、M.-P. Heitz、C. Mioskowski
DOI:10.1016/s0040-4039(00)99627-8
日期:1989.1
Substituted tetrahydropyrans are prepared in good yields by PPh3/CBr4 induced cyclization of acetals. The utility of this new procedure is illustrated by the synthesis of cis-2-(2-methyl-1 propenyl)- 4 methyltetrahydropyran (roseoxide).
Chehardoli, Gholamabbas; Zolfigol, Mohammad Ali; Khakyzadeh, Vahid, South African Journal of Chemistry, 2011, vol. 64, p. 127 - 131
作者:Chehardoli, Gholamabbas、Zolfigol, Mohammad Ali、Khakyzadeh, Vahid、Gholami, Hadi、Niknam, Khodabakhsh
DOI:——
日期:——
Microwave Assisted Catalytic Protection and Deprotection of Alcohols with 3,4-Dihydro-2H-Pyran
作者:Nabajyoti Deka、Jadab C. Sarma
DOI:10.1080/00397910008087070
日期:2000.12.1
Protection of alcohols as their 2-tetrahydropyranyl ethers and their subsequent hydrolysis can be easily achieved through a microwave irradiated reaction catalysed by iodine.
A mild method for the deprotection of tetrahydropyranyl (THP) ethers catalyzed by iron(III) tosylate
作者:Matthew R. Bockman、Veronica V. Angeles、Julia M. Martino、Purav P. Vagadia、Ram S. Mohan
DOI:10.1016/j.tetlet.2011.10.068
日期:2011.12
A mild method for the deprotection of THP ethers catalyzed by iron(III) tosylate (2.0 mol %) in CH3OH has been developed. Iron(III) tosylate, Fe(OTs)(3)center dot 6H(2)O, is a commercially available solid that is inexpensive, noncorrosive, and easy to handle. The room temperature reaction conditions make this method attractive for deprotection of a range of THP ethers. (C) 2011 Elsevier Ltd. All rights reserved.
Direct Conversion of TMS-ethers to THP-ethers Catalyzed by {[K.18-Crown-6]Br<sub>3</sub>}<sub>n</sub>
作者:Gholamabbas Chehardoli、Mohammad Ali Zolfigol、Fateme Derakhshanpanah