TW339336B - Process for preparing 1,4-diketo-3,6-diphenylpyprolo-(3,4-C)-pyprole - Google Patents

Process for preparing 1,4-diketo-3,6-diphenylpyprolo-(3,4-C)-pyprole

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Publication number
TW339336B
TW339336B TW082109566A TW82109566A TW339336B TW 339336 B TW339336 B TW 339336B TW 082109566 A TW082109566 A TW 082109566A TW 82109566 A TW82109566 A TW 82109566A TW 339336 B TW339336 B TW 339336B
Authority
TW
Taiwan
Prior art keywords
diketo
pyprole
diphenylpyprolo
preparing
pyrrole
Prior art date
Application number
TW082109566A
Other languages
Chinese (zh)
Inventor
Babler Fridolin
Original Assignee
Ciba Sc Holding Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ciba Sc Holding Ag filed Critical Ciba Sc Holding Ag
Application granted granted Critical
Publication of TW339336B publication Critical patent/TW339336B/en

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  • Pyrrole Compounds (AREA)

Abstract

A sort of process of production of 1,4-diketo-3,6-diphenylpyrrole-(3,4-C)-pyrrole by heating 1,4-diketo-3,6-diphenylphrrolo-(3,4-C)-pyrrole to elevated temperature, preferably by recrystallaization from an aromatic solvent or mixture of aromatic solvents, to a temperature higher than 220oC.
TW082109566A 1992-12-23 1993-11-16 Process for preparing 1,4-diketo-3,6-diphenylpyprolo-(3,4-C)-pyprole TW339336B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US99621692A 1992-12-23 1992-12-23

Publications (1)

Publication Number Publication Date
TW339336B true TW339336B (en) 1998-09-01

Family

ID=58263332

Family Applications (1)

Application Number Title Priority Date Filing Date
TW082109566A TW339336B (en) 1992-12-23 1993-11-16 Process for preparing 1,4-diketo-3,6-diphenylpyprolo-(3,4-C)-pyprole

Country Status (1)

Country Link
TW (1) TW339336B (en)

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