Synthesis of 2-methyl-4-selenoquinazolone, 2-phenylbenzoselenazole, and its derivatives / Dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in the Faculty of Pure Science of Columbia University

by Yü-Gwan Chen

[A] Not a new compound but prepared by a different method.

[B] Note—dimethyl selenophene, however, is colorless.

Transcriber's notes:

The diagram of 3-(p-phenylarsonic)-aminoselenazine, labelled (II), has been adjusted to make its structure clearer.

The "l" in "2HCl" in the first equation under "Preparation of 2-methyl-4-selenoquinazolone" was missing in the original.

The following is a list of changes made to the original. The first line is the original line, the second the corrected one.

selnoquinazolone prepared in the course of this research
selenoquinazolone prepared in the course of this research

on four different strains of mouse carcenoma and one strain
on four different strains of mouse carcinoma and one strain

in consequence of its smell I so completely loss my sense of smell
in consequence of its smell I so completely lost my sense of smell

of the phenazine, oxasine, thiazine, acridine series show
of the phenazine, oxazine, thiazine, acridine series show