Highly Fluorinated Adamantanols: Synthesis, Acidities, and Reactivities
摘要:
Aerosol direct fluorination of 1-adamantyl acetate produces F-1-adamantyl trifluoroacetate and 2-hydryl-F-1-adamantyl trifluoroacetate in a near 1:1 ratio. Hydrolyses of these two esters give the corresponding alcohols, F-adamantan-1-ol and 2-hydryl-F-adamantan-1-ol. 2-Hydryl-F-adamantan-2-ol is synthesized by LiAlH4 reduction of F-adamantanone, The acidities of these alcohols and the rates of their acetylation reactions were measured. A H-1 NMR study of their hydrogen bonding with t-BuOCH(3) is described.
Perfluoroadamantly acrylate compound and intermediate therefor
申请人:Tanaka Shinji
公开号:US20050131247A1
公开(公告)日:2005-06-16
A perfluoroadamantyl acrylate compound which is highly useful as a raw material for functional resins,etc.;and an intermediate therefore. The perfluoroadamantyl acrylate compound comprises perfluoroadamantane having a CH
2
═C(R)COO group(wherein R is a hydrogen atom, a methyl group or a trifluoromethyl group) at the
1
-position, at each of the
1
- and
3
-positions, at each of the
1
-,
3
- and
5
-positions, at each of the
1
-,
3
-,
5
- and
7
-positions, or at the 2-position.
PERFLUOROADAMANTYL ACRYLATE COMPOUND AND INTERMEDIATE THEREFOR
申请人:IDEMITSU KOSAN CO., LTD.
公开号:EP1460057B1
公开(公告)日:2006-12-13
Onset on Anh Hyperconjugation in the Transition State of Carbonyl Addition by Deactivation of Periplanar Vicinal Bonds
作者:Mira Kaselj、James L. Adcock、Huimin Luo、Huqiu Zhang、Haifang Li、William J. le Noble
DOI:10.1021/ja00132a007
日期:1995.7
The previously observed preferential syn delivery of-hydride anion in the reduction of the carbonyl group of 5-fluoroadamantan-2-one is inverted if the identities of all hydrogen and fluorine atoms are reversed. A similar and somewhat smaller alteration is observed in the reduction of 5-chloroperfluoroadamantan-2-one. The interpretation is that the periplanar bonds are then no longer capable of stabilizing the transition state by electron donation, and instead do so by accepting electron density from the incipient bond into the sigma* orbitals. The configurations of the reduction products were deduced from their F-19 NMR spectra by means of a chemical shift additivity procedure.