Synthesis and characterisation of severely hindered P-OR compounds
摘要:
P-Cl substrates were converted into their P-OR analogues from hindered alcohols using an amine base. Where the system was severely hindered, more forcing conditions were required that necessitated the presence of a metal alkoxide nucleophile before successful reactions were observed. In some instances, the products were thermally unstable and reverted to alkenes by elimination reactions, while others were sensitive to moisture. Here, hydrolysis products prevailed if moisture was not rigorously excluded. Details are presented to obtain the P(III) and P(V) esters, diesters and half esters. (C) 2009 Elsevier Ltd. All rights reserved.
Dopant Group-Substituted Semiconductor Precursor Compounds, Compositions Containing the Same, and Methods of Making Such Compounds and Compositions
申请人:GUO Wenzhuo
公开号:US20110178321A1
公开(公告)日:2011-07-21
Dopant-group substituted (cyclo)silane compounds, liquid-phase compositions containing such compounds, and methods for making the same. Such compounds (and/or ink compositions containing the same) are useful for printing or spin coating a doped silane film onto a substrate that can easily be converted into a doped amorphous or polycrystalline silicon film suitable for electronic devices. Thus, the present invention advantageously provides commercial qualities and quantities of doped semiconductor films from a doped “liquid silicon” composition.
US7674926B1
申请人:——
公开号:US7674926B1
公开(公告)日:2010-03-09
US8624049B2
申请人:——
公开号:US8624049B2
公开(公告)日:2014-01-07
Synthesis and characterisation of severely hindered P-OR compounds
作者:D. Bradley G. Williams、Takelani E. Netshiozwi
DOI:10.1016/j.tet.2009.10.008
日期:2009.11
P-Cl substrates were converted into their P-OR analogues from hindered alcohols using an amine base. Where the system was severely hindered, more forcing conditions were required that necessitated the presence of a metal alkoxide nucleophile before successful reactions were observed. In some instances, the products were thermally unstable and reverted to alkenes by elimination reactions, while others were sensitive to moisture. Here, hydrolysis products prevailed if moisture was not rigorously excluded. Details are presented to obtain the P(III) and P(V) esters, diesters and half esters. (C) 2009 Elsevier Ltd. All rights reserved.