113386-50-8

Basic information

• Product Name: 1-Phthalazinol, 2-(2-bromophenyl)-1,2-dihydro-
• CAS NO: 113386-50-8
• Molecular Formula: C14H11BrN2O
• Molecular Weight: 303.158
• Mol File: 113386-50-8.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: 1-Phthalazinol, 2-(2-bromophenyl)-1,2-dihydro-(CAS DataBase Reference)
• NIST Chemistry Reference: 1-Phthalazinol, 2-(2-bromophenyl)-1,2-dihydro-(113386-50-8)
• EPA Substance Registry System: 1-Phthalazinol, 2-(2-bromophenyl)-1,2-dihydro-(113386-50-8)

Safety Data

• Hazardous Substances Data: 113386-50-8(Hazardous Substances Data)

Upstream product

• 50709-33-6 2-bromophenylhydrazine hydrochloride 
• 643-79-8 o-phthalic dicarboxaldehyde 
• 113386-61-1 2-[(2-Bromo-phenyl)-hydrazonomethyl]-benzaldehyde 

Downstream Products

• 113386-56-4 (E)-2,2'-Bis-(2-bromo-phenyl)-2H,2'H-[1,1']biphthalazinylidene 

Relevant articles and documents

1,1'-Bi-(2-aryl-1,2-dihydrophthalazinylidenes): Potential New Pigments. Relief of Strain by a trans-Folded Alkene Linkage

1-Hydroxy-2-aryl-1,2-dihydrophthalazines are dimerized to give 1,1'-bi-(2-aryl-1,2-dihydrophthalazinylidenes); an X-ray crystal structure shows a relief of strain in these compounds by a trans-folded alkene linkage and a buckling of the phthalazinyl ring.

A trans-Folded Alkene System: Synthesis, Structure and Isomerization of 2,2'-Diaryl-1,1'-bi(1,2-dihydrophthalazinylidenes)

A series of 2,2'-diaryl-1,1'-bi(1,2-dihydrophthalazinylidenes) have been synthesized from 1-hydroxy-2-aryl-1,2-dihydrophthalazines.An X-ray crystal structure showed relief of strain in these new ylidenes by a trans-folding of the alkene linkage.The mechanism of their formation was probed with additives such as sulphur, N-phenylmaleimide, and dimethyl acetylenedicarboxylate which interacted with intermediates in the reaction and gave further interesting new ylidene structures.The mechanism of trans-cis isomerization of the biphthalazinylidenes was studied using 270 MHz 1 H-NMR spectroscopy to measure the kinetics and activation parameters for the isomerization.X-Ray crystal structures of the following compounds are reported: 2,2'(p-bromophenyl)-trans-1,1'-bi--4--1-phenyl-3,4-dihydropyrrole-2,5-dione, (10d); dimethyl 3-(2-phenyl-1,2-dihydrophthalazin-1-ylidene)-2-oxobutanedioate (11), and dimethyl 2-acetoxy-3-(2-phenyl-1,2-dihydrophthalazin-1-yl)but-2-ene-1,4-dioate (12).