Comptes Rendus Chimie p. 1095 - 1102 (2011)
Update date:2022-08-04
Topics:
Abdolmanaf Taghavi
Moghadam, Majid
Mohammadpoor-Baltork, Iraj
Tangestaninejad, Shahram
Mirkhani, Valiollah
Khosropour, Ahmad Reza
In the present work, the catalytic activity of high-valent tetraphenylporphyrinatovanadium(IV) trifluoromethanesulfonate, [V IV(TPP)(OTf)2], in the tetrahydropyranylation of alcohols and phenols with 3,4-dihydro-2H-pyran (DHP) is reported. This new electron-deficient V(IV) compound was used as a highly efficient catalyst for pyranylation of primary (aliphatic and benzylic), sterically-hindered secondary and tertiary alcohols with DHP. Tetrahydropyranylation of phenols with DHP was also performed to afford the desired THP-ethers. The chemoselectivity of this method was also investigated. The results indicated that primary alcohols are more reactive in the presence of secondary and tertiary alcohols and phenols. This catalyst was reused several times without loss of its activity.
View Morewebsite:http://www.greenutra.cn
Contact:0086-411-39553357
Address:No. 7-1-1802, Huizhi Garden,Ocean Square,Dalian, 116033, China
Shanghai Demand Chemical Co., ltd,China
Contact:86-021-55237578/55239122
Address:Room 3H, No.578, Yingkou Road, Yangpu District, Shanghai, China
HaiNan Periwinkle Pharmaceutical Co.,Ltd.
website:http://www.cchpharm.com/en/index.html
Contact:020-82208978
Address:Gongye road,Wuzhishan city,HaiNan province
Contact:+44 (0)2036089360-31
Address:Chanceryhouse,Chancery Lan
Contact:+86-515-88356562
Address:No.2, West Daqing Road, Yancheng, Jiangsu, China
Doi:10.1021/ja00339a036
(1983)Doi:10.1021/ja01850a052
(1941)Doi:10.1038/2061161a0
(1965)Doi:10.1135/cccc19823077
(1982)Doi:10.1007/BF00995713
(1984)Doi:10.1021/jo00152a012
(1983)