... 18) S. Inoue: This Bulletin, 6, 352 (1958); M. Ishidate, H. Yuki: Ibid., 8, 137 (1960). ... 1324 Vol. ... Then, the solution was neutralized with KOH, concentrated to a small volume under reduced pressure, and made strong alkaline with K2C03, when a crude mixture was de- posited. ...