Ammonium thiocyanate was prepared in 2 steps from aqueous ammonia and carbon disulfied by phase transfer catalysis in yield of 72 7%, when catalysts consisted of OP 4 and OP 21 in mole ratio of 4∶6. The effects of re...
L Alanine crystal with the same optical purity ([ α ] 25 D=+1 98) as that of the seed L alanine crystal has been obtained from saturated solution of DL α alanine by seed crystal resolution method. Addition of surfac...