Potassium triethylcarboxide

The new method has the advantage that the reaction proceeds rapidly at 65°, a temperature at which isomerization of organoboranes is not significant. Various alkoxides were examined hindered alkoxides provided the best results. Of these lithium triethylcarboxide proved superior to potassium r-butoxidc and potassium triethylcarboxide. Chlorodifluoromethane can be replaced by chloroform, in which case the yield is somewhat lower (85%) but the procedure is somewhat more convenient. 

DABCO). 1,5-Diazabicy do [5,4,0 ] undec-ene-5 (DBU). Diethylamine. Ethylene-diamine. Lithio propylidene-f-buty limine. Lithium bis(trimethylsilyl)amide. Lithium f-butoxide. Lithium diethylamide. Lithium diisopropylamide. Lithium N-isopro-pylcyclohexylamide. Lithium orthophosphate. Lithium 2,2,6,6-tetramethylpiper-ide. Lithium triethylcarboxide. 1,2,2,6,6-Pentamethylpiperidine. Piperazine. Potassium f-butoxide. Potassium hexamethyldi-silaznae. Potassium hydride. Potassium hydroxide. Pyridine. 4-Pyrrolidopyridine. Quinuclidine. Sodium ethoxide. Sodium methoxide. Sodium thioethoxide. Tetra-methylguanidine. Thallous ethoxide. Tri-ethylamine. 

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See also in sourсe #XX -- [ ]

See also in sourсe #XX -- [ ]

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