Tetrahedron letters

A new synthesis of cyclic ureas from aromatic diamines by selenium-assisted carbonylation with carbon monoxide

T Yoshida, N Kambe, S Murai, N Sonoda

Index: Yoshida, Tohru; Kambe, Nobuaki; Murai, Shinji; Sonoda, Noboru Tetrahedron Letters, 1986 , vol. 27, # 26 p. 3037 - 3040

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Citation Number: 30

Abstract

... 5; T. Yoshida, N. Kambe, S. Murai, and N. Sonoda, unpublished results. 6; G. Kempter, HJ Ziegner, G. Moser, W. Natho; Wiss. Z. Paedagog. Hochsch. Karl Liebknecht Potsdam, 21 (1977), p. 5. 7; Strongly basic tertiary amine has been known to accelerate the reaction (see ref. 2 in this paper). 8; US Patent 4343655 A CA, 91 (1982), p. 164847k. 9; PW Sherwood; J. Coat. Technol., 54 (1982), p. 61CA, 98 (1983), p. 73870s. ...