6872-10-2

Basic information

• Product Name: 1,3,3-trimethyl-2-methylene-5-indolinecarboxylic acid methyl ester
• Synonyms: 1,3,3-trimethyl-2-methylene-5-indolinecarboxylic acid methyl ester
• CAS NO: 6872-10-2
• Molecular Formula: C₁₄H₁₇NO₂
• Molecular Weight: 231.29028
• Mol File: 6872-10-2.mol
• Article Data: 1

Chemical Properties

• Appearance: /
• CAS DataBase Reference: 1,3,3-trimethyl-2-methylene-5-indolinecarboxylic acid methyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: 1,3,3-trimethyl-2-methylene-5-indolinecarboxylic acid methyl ester(6872-10-2)
• EPA Substance Registry System: 1,3,3-trimethyl-2-methylene-5-indolinecarboxylic acid methyl ester(6872-10-2)

Safety Data

• Hazardous Substances Data: 6872-10-2(Hazardous Substances Data)

Upstream product

• 563-80-4 3-methyl-butan-2-one 
• 77-78-1 dimethyl sulfate 

Downstream Products

• 5718-26-3 1,3,3-trimethyl-2-[2-(3-methyl-5-oxo-1-phenyl-1,5-dihydro-pyrazol-4-ylidene)-ethylidene]-2,3-dihydro-indole-5-carboxylic acid methyl ester 

Relevant articles and documents

Method for preparing indoline polymethin dye via one-pot method

The invention discloses a method for preparing an indoline polymethin dye via a one-pot method. The method comprises the following steps of: carrying out condensation and ring closing on phenylhydrazine or para-substituted phenylhydrazine hydrochloride and methyl isopropyl ketone in an alcohol solvent under the catalysis of sulfuric acid so as to generate 2,3,3-trimethylindole or a derivative thereof, adding alkali to carry out neutralization, and carrying out filtration to remove salt; adding an appropriate acid-binding agent in the filtrate, dropwise adding dimethyl sulfate to generate 1,3,3-trimethyl-2--methylene indoline or a derivative thereof; and directly adding 1-phenyl-3-methyl-4-formyl-5-pyrazolone, and carrying out acid catalysis and condensation to generate a target dye. The method has the advantages of being easy to operate, high in yield, low in cost and less in wastewater.