Transcriber's Note:

Every effort has been made to replicate this text as faithfully aspossible. Some changes have been made. They are listed at the end ofthe text.

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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, M. A.
NEW YORK CITY
1922


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ACKNOWLEDGMENT AND DEDICATION

The following research was undertaken at the suggestion ofProfessor Marston Taylor Bogert to whose interest and advicethis work owes whatever merit it may possess.

Y. G. CHEN.


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CONTENTS

Acknowledgment and Dedication2
Abstract of the Dissertation4
Purpose of the Research5
Introduction7
Pharmacological Review8
Tinctorial Review14
Experimental:16
2-methyl-4-selenoquinazolone 
Four Methods of Preparation 
Analysis of Selenium Organic Compounds 
2-phenylbenzoselenazole 
Mononitro Derivative 
Monoamino Derivative 
Monoacetyl Derivative 
Monobenzylidene Derivative 
An Azo Dye 
Dinitro Derivative 
Diamino Derivative 
Diacetyl and Dibenzylidene Derivatives 
Dyeing with Azo Dyes 
Bibliography25
Vita28

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