Preceding paper^^^^^^^^ have shown that a CFa group and, to a smaller extent, a CFr group, direct chlorination away from the hydrogen atoms linked to a carbon alpha to the fluorinated group. Fluoroform, CHF8, is very slowly chlorinated to CFtCl but the operation can be carried out in quartz when brilliant illumination is provided.'Methyl fluoroform, CFsCHs, offers a marked lag to chlorination in sunlight, but when the chlorination starts it ...
