\vIffiOS AND HEROS-CI~CL(~XEXASOL AS
A SOLTEST FOR DETERXIXATIOS OF M O L . U'TS. \June. 10i1 above. Tlic iicid forms shiny lenflcts nfter recrystnllisntion from 50% formic acid (found C 26.7, H 2.2%; CEII,0,WC13As requires C 26.6,Ii 1.9%). T~icltloroucr~larsattiiilic acid.-Atosyl (24 g.), trichloroncryl cliloride~ (22 g.), and bcnzcne (200 c.c.) were lientcd for 2 hours on a wntcr-bath, with continuous stirring. The rcnction product, worlicd up 11s nbovc, was rccrystnllised from 50% ncctic acid iind formed clusters of C,II,O4NCI,As requircs C 38.9, H 1.9, N 3.7%). A~0-~ti~lcccwo~~lu~,~ul,iliL. acirl.-Thc acid cliloritle wns ~ircpnred lip nddinp undeccnoic ncid (200 9.) to poatleretl phospliorns pcutiichloridc (22G 6.). When tho spontaneous renction lind ceased, the mixture was heated on the stcnm-bath for 20 minutes nnd suhjccted to distillittion under 12 nitn. pressure. B.11. 120'. Atosyl (24 g.) iind undccenopl clilorido (20 6.) wcrc boilcd for 4 hours ill tJcliZenC (200 c.c.), Tlic solid rcnction product ivns collected, wnshed with water, nu1 rccrystnllised from 50% acetic ncid or ~i~ctliyl ethyl Iictollc (found C 584.2, H G.9, N 4.0% ; Cl,1I2,O,~NAs rcquircs C 53.3, H 6.8 ; Udccoglarsaitilic acid.-Undecoic . ncid (b.p. 1Gd"/ 15 mm., 179"/28 mni.) wns prepnrcd by cntiilytic hydrogenation of undeccnoic acid (93 g.)'in glncinl ncctic acid