A concise synthesis of 2-(2-hydroxyphenyl)acetonitriles has been developed through reaction of trimethylsilyl cyanide and the o-quinone methides in situ generated from 2-(1-tosylalkyl)phenols under basic conditions.In...A concise synthesis of 2-(2-hydroxyphenyl)acetonitriles has been developed through reaction of trimethylsilyl cyanide and the o-quinone methides in situ generated from 2-(1-tosylalkyl)phenols under basic conditions.In addition,2-(2-hydroxyphenyl)acetonitriles could be conveniently transformed to benzofuranones.展开更多
Organophosphorous compounds containing phosphorus as an integral part have been widely used in industry, organic synthesis and optoelectronics, o-Xylylene-a,a＇-bis（triphenylphosphinebromide）（OXBTPPB） is a facile ...Organophosphorous compounds containing phosphorus as an integral part have been widely used in industry, organic synthesis and optoelectronics, o-Xylylene-a,a＇-bis（triphenylphosphinebromide）（OXBTPPB） is a facile reagent to convert o-quinones（e.g., 9,10-phenanthrenequinone） into polycyclic aromatic hydrocarbons（PAHs）. Herein lies an improved synthetic route to OXBTPPB. The resultant was carefully characterized with GC-EIMS, ^1H NMR, ^13C NMR, spectroscopic techniques. The EIMS shows characteristic peaks at m/z=262.4, 183.3, 108.2, 77.1 attributed to the [C18H15P]^＋, [C12H8P]^＋, [C6H8P]^＋, [C6H5]^＋ ions, respectively. The ^1H and ^13C NMR spectrum shows well resolved peaks and all the hydrogens and carbons were well-assigned via a combined study of ^1H-^1H COSY, HMBC, and HMQC experiments. The mechanism for the formation of OXBTPPB was proposed based on literature and obtained experimental data. Meanwhile, the thermal stability of OXBTPPB was evaluated with TGA analysis, and an onset decomposition temperature（Td） was recorded at 323.6 ℃.展开更多
基金the National Natural Science Foundation of China(21125208&20921092)National Basic Research Program of China(2010CB833300).
文摘A concise synthesis of 2-(2-hydroxyphenyl)acetonitriles has been developed through reaction of trimethylsilyl cyanide and the o-quinone methides in situ generated from 2-(1-tosylalkyl)phenols under basic conditions.In addition,2-(2-hydroxyphenyl)acetonitriles could be conveniently transformed to benzofuranones.
基金Supported by the National Natural Science Foundation of China(Nos.20573040,20474024,20125421,90101026 and 50303007)
文摘Organophosphorous compounds containing phosphorus as an integral part have been widely used in industry, organic synthesis and optoelectronics, o-Xylylene-a,a＇-bis（triphenylphosphinebromide）（OXBTPPB） is a facile reagent to convert o-quinones（e.g., 9,10-phenanthrenequinone） into polycyclic aromatic hydrocarbons（PAHs）. Herein lies an improved synthetic route to OXBTPPB. The resultant was carefully characterized with GC-EIMS, ^1H NMR, ^13C NMR, spectroscopic techniques. The EIMS shows characteristic peaks at m/z=262.4, 183.3, 108.2, 77.1 attributed to the [C18H15P]^＋, [C12H8P]^＋, [C6H8P]^＋, [C6H5]^＋ ions, respectively. The ^1H and ^13C NMR spectrum shows well resolved peaks and all the hydrogens and carbons were well-assigned via a combined study of ^1H-^1H COSY, HMBC, and HMQC experiments. The mechanism for the formation of OXBTPPB was proposed based on literature and obtained experimental data. Meanwhile, the thermal stability of OXBTPPB was evaluated with TGA analysis, and an onset decomposition temperature（Td） was recorded at 323.6 ℃.
