Selective C–H bond hydroxylation of cyclohexanes in water by supramolecular control
作者:Bin Yang、Jian-Fang Cui、Man Kin Wong
DOI:10.1039/c7ra03930a
日期:——
A new approach for selective hydroxylation of non-activated cyclohexanes using dioxirane generated in situ in water through supramolecularcontrol has been developed. Using β-CD and γ-CD as the supramolecular hosts, selective hydroxylation of cyclohexane substrates, including trans/cis-1,4-, 1,3- and 1,2-dimethylcyclohexanes and trans/cis-decahydronaphthalene, was achieved in up to 54% yield in water
Cyclohexane-based 1,3-dipodands: complexation and conformational biasing
作者:Shailaja M. Shirodkar、Gary R. Weisman
DOI:10.1039/c39890000236
日期:——
Cyclohexane-based cis-1,3-dipodand (1) undergoes ring inversion to a diaxial conformation upon Na+ complexation, while related diaxially biased dipodand (2) is a better host.
Selective functionalization of hydrocarbons. 6. Mechanistic and preparative studies on the regio- and stereoselective paraffin hydroxylation with peracids
作者:Hans Joerg Schneider、Walter Mueller
DOI:10.1021/jo00223a036
日期:1985.11
The Synthesis and Acid-catalyzed Cyclization of α-Methylheptenone
作者:Jerrold Meinwald、John A. Yankeelov
DOI:10.1021/ja01552a062
日期:1958.10
Stereoselective dioxirane hydroxylations and the synthesis of tripod boronic acid esters
Methyl(trifluoromethyl)dioxirane (TFDO, 1b), a powerful yet selective oxidant, was employed to achieve in high yield the direct stereoselective hydroxylation at tert-CH of cis,cis-1,3,5-trimethylcyclohexane (4), yielding triol 7 bearing all-axial disposition of the three OH groups. Similarly, TFDO oxidation of 1,3- and of 1,4-dimethylcyclohexane gave the corresponding Z-diols 5 and 6, respectively. Triol 7 was a convenient starting material to synthesize a novel borate-that is, 1-bora-2,8,9-trioxa-3,5,7-trimethyl-adamantane (8)-having a peculiar cage-shaped 'tripod' structure. From triol 7, novel tripod arylboronic Bronsted-assisted Lewis acids (BLA) could be obtained, as exemplified by 10a and 10b. (C) 2007 Elsevier Ltd. All rights reserved.