1- ethy chlorides, 2-substituted

The reaction of phosgene with CH-acid imines followed by dehydrochloridation in the presence of triethylamine affords N-substituted vinyl carbamoyl chlorides in good yields. For example, N-methyl-N-vinyl carbamoyl chloride was prepared in 67% distilled yield through phosgenation of ethy-lidene methyl amine as depicted in scheme 128 (Ref. 181). 

Glycol is thus formulated as derived from two water types by the substitution of H by C H (ethylene). Wurtz prepared glycol chlorhydrin by the action of hydrogen chloride on glycol, and glycol ether (ethylene oxide, oxyde d ethy-lene) by the action of potash solution on the chlorhydrin ... 

One-pot treatment of manganese metal by a catalytic amount of ZnCl2 (or CdCh or HgClj) is sometimes required to facilitate the attack of the metal by the organic halide, for instance in the case of various substituted allylic bromides (Scheme 13.14). Under these conditions, it should be emphasized that allylic chlorides can be used successfully. Finally, note that the reaction can often be performed in THF or in ethy lacetate as a solvent. 

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