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Department of Chemistry, Faculty of Science, M. S. University of Baroda, Baroda-890 002 Manuscript received 21 April1986, revised .17 December 1987, accepted 22 December 1987 The reaction of phthalylalanyl chloride with different potassium O-alkylxanthates (R =Et, n-pr, iso-pr, n-Bu, iso-Bu) around 0° in ether solution gave rise to the corresponding O-alkyl-S-phthalylalanyl xanthates. Irradiation of the latter in benzene solution gave xanthic acid disulphide, phthalylalanine and thioanhydride of phthalylalanine in addition to some other products. Thermal decomposition of these acyixanthates around 150 - 60° for 15 - 20 min yielded the corresponding esters and carbon disulphide |
