Bulletin of the Chemical Society of Japan p. 661 - 666 (1987)
Update date:2022-08-29
Topics:
Shiraiwa, Tadashi
Miyazaki, Hideya
Imai, Tomoki
Sunami, Michio
Kurokawa, Hidemoto
Infrared spectrum, solubility, and ternary phase diagram of solubility indicated that 1,1,3,3-tetramethylbutylammonium salt (DL-TMB salt) of N-formyl-DL-α-phenylglycine is a conglomerate.In order to resolve DL-TMB salt efficiently, crystallization of D- and L-TMB salts was examined by free energy of critical nucleation in supersaturated solutions.Successive preferential crystallization of DL-TMB salt was experimented at 10 deg C for racemic solution in ethanol with the degree of supersaturation of 130percent, and D- and L-α-phenylglycine with 100percent optical purity were obtained from pure D- and L-TMB salts.
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