It will, of course, be recognized that an occasional mistake or omission will inevitably be found in such a pamphlet as this which contains so many references and formulae. The committee on publication will therefore deem it a favor if they are notified when any such error is discovered. It is hoped also that if any chemist knows a better method for the preparation of any of the compounds considered, or if anyone discovers any improvements in the methods, he will furnish the authors with such information. Any points which may arise in regard to the various preparations will be gladly discussed. In conclusion, the editors are ready to do all they can to make this. work successful, and welcome suggestions of any kind. They feel that the success of the series will undoubtedly depend upon the cooperation of others, and as its success promises to be important to research chemists, the editors urge all interested to assist. THE EDITORS TABLE OF CONTENTS PAGE I. BENZALACETOPHENONE...........................1 II. BENZYL BENZOATE.............................5 III. BENZYL CYANIDE.............................9 IV. a, g-DICHLOROACETONE..............13 V. _p_-DIMETHYLAMINOBENZALDEHYDE..................17 VI. ETHYL OXALATE...............................23 VII. ETHYL PHENYLACETATE........................27 VIII. GLYCEROL a, g-DICHLOROHYDRIN....29 IX. GLYCEROL a-MONOCHLORORYDRIN............33 X. HYDRAZINE SULFATE............................37 XI. MESITYLENE..................................41 XII. METHYL RED.................................47 XIII. _p_-NITROBENZOIC ACID.......................53 XIV. _p_-NITROBENZYL CYAI~DE......................57 XV. _p_-NITROPHENYLACETIC ACID....................59 XVI. NITROSO-b-NAPHTHOL....................61 XVII. PHENYLACETIC ACID.........................63 XVIII. PHENYLACETYLENE..........................67 XIX. PHENYLHYDRAZINE............................71 XX. PHTHALIMIDE.................................75 XXI. QUINOLINE..................................79 XXII. QUINONE...................................85 XXIII. SODIUM _p_-TOLUENESULFINATE................89 XXIV. 1,3,5-TRINTROBENZENE......................93 XXV. 2,4,6-TRINTROBENZOIC ACID..................95 INDEX.....................................99 ORGANIC SYNTHESES I BENZALACETOPHENONE C6H5CHO + C6H5COCH3 + (NaOH)--> C6H5CH=CHCOC6H5 + H2O Prepared by E. P. KOHLER and E. M. CHADWELL. Checked by H. T. CLARKE and R. P. LEAVITT. 1. Procedure