6421-52-9

Usage

Molecular weight

311.59 g/mol

Appearance

Colorless to pale yellow liquid

Odor

Sharp, pungent

Physical state

Liquid

Hazardous nature

Yes, due to potential for skin, eye, respiratory, and digestive tract irritation

Uses

a. Intermediate in the production of pharmaceuticals and agrochemicals
b. Cross-linking agent in polymers and resins
c. Reagent in organic synthesis

Safety precautions

Handle and use with caution, following proper safety protocols to minimize exposure and potential harm.

Upstream product

• 2207-27-4 5,5-dimethoxy-1,2,3,4-tetrachlorocyclopentadiene 
• 67-56-1 methanol 
• 102325-38-2 1,7,8,9-Tetrachloro-10,10-dimethoxy-4-oxa-tricyclo[5.2.1.0^2,6]deca-2⁽⁶⁾,8-diene-3,5-dione 

Relevant academic research and scientific papers

The Alleged Isolable 1,4,5,6-Tetrachloro-7,7-dimethoxynorbornadiene-2,3-dicarboxylic Anhydride

Addition of dibromomaleic anhydride to tetrachlorocyclopentadienone dimethyl acetal gives the pseudo-lactone 11 (X-ray crystal structure analysis) and not the mixture of endo- and exo-adducts 2 previously claimed; reduction of this product with Zn/HOAc gi

The Role of Norcaradiene Intermediates in the Thermal Rearrangement of Norbornadien-7-one Acetals

The bis(methoxycarbonyl)tetrachloronorbornadienone dimethyl acetal (1) rearranges spontaneously to the hemimellitate (2) via the norcaradiene intermediate (6); the corresponding anhydride (5) is stable below 200 deg C because steric strain prevents its conversion into an analogous intermediate (9).