Photochemical chlorodecarboxylation via an electron transfer mechanism
作者:Keiji Okada、Kazushige Okamoto、Masaji Oda
DOI:10.1039/c39890001636
日期:——
A new method of chlorodecarboxylation of carboxylic acids via N-acyloxyphthalimides is developed; the reaction proceeds upon irradiation of N-acyloxyphthalimides in the presence of 1,4-diazabicyclo[2.2.2]octane in ButOH–CCl4–H2O (53:42:5 v/v) in moderate to high yields.
提出了一种通过N-酰氧基邻苯二甲酰亚胺对羧酸进行氯脱羧的新方法。当照射在反应进行Ñ -acyloxyphthalimides在1,4-二氮杂双环[2.2.2]辛烷在卜的存在吨OH-CCL 4 -H 2 O(53:42:5 v / v)在中度到高收率。
The invention of new radical chain reactions. Part VIII. Radical chemistry of thiohydroxamic esters; A new method for the generation of carbon radicals from carboxylic acids
作者:Derek H.R. Barton、David Crich、William B. Motherwell
DOI:10.1016/s0040-4020(01)97173-x
日期:1985.1
by tributylstannane in a radicalchainreaction to furnish nor-alkanes.1 In the absence of the stannane a smooth decarboxylatlive rearrangement occurs to give 2-substituted thiopyridines.1 The radicals present in this reaction provoke with -butylthiol an efficient radicalreaction with formation of nor-alkane and 2-pyridyl--butyl disulphide.1Similarly these carbon radicals can be captured by halogen
5-(Tetradecyloxy)-2-furancarboxylic acid and related hypolipidemic fatty acid-like alkyloxyarylcarboxylic acids
作者:Roger A. Parker、Takashi Kariya、J. Martin Grisar、Vladimir Petrow
DOI:10.1021/jm00216a009
日期:1977.6
5-(Tetradecyloxy)-2-furancarboxylic acid (91, RMI 14514) was found to lower blood lipids and to inhibit fatty acid synthesis with minimal effects on liver weight and liver fat content. This fatty acid-like compound represents a new class of hypolipidemic agent; it is effective in rats and monkeys. The compound resulted from discovery of hypolipidemic activity in certain beta-keto esters, postulation
Thiohydroxamic esters in general decompose smoothly by a radical chain reaction to give carbon radicals which can be quenched in a synthetically useful manner.
A practical alternative to the hunsdiecker reaction
作者:Derek H.R. Barton、David Crich、William B. Motherwell
DOI:10.1016/s0040-4039(01)99826-0
日期:1983.1
Carboxylic acid esters derivedfrom N-hydroxy-pyridine-2-thione react with carbon tetrachloride, bromotrichloromethane or iodoform in a radical chain reaction to give the corresponding noralkyl chlorides, bromides or iodides in high yield.