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Chemical product profile

HONGKUN / PRODUCT DIRECTORY

Methyl 3-methoxy-2-[2-(chloromethyl)phenyl]acrylate | CAS 117428-95-2

A methoxyacrylate-bearing aromatic intermediate with a separate chloromethyl connection site, discussed as the E isomer in published fungicide chemistry; procurement must explicitly define alkene geometry rather than infer it from CAS alone.

CAS117428-95-2
Molecular formulaC12H13ClO3
Molecular weight240.68 g/mol

Product overview

This intermediate combines a methoxyacrylate group with an ortho-chloromethylphenyl substituent. The methoxy-substituted double bond and methyl ester form one part of the fungicide-related scaffold, while the benzylic chloromethyl group provides a separate connection site. Published enestroburin and pyraoxystrobin routes use the E intermediate. Specify the required alkene geometry and E/Z acceptance criteria with the structural drawing. Quantitative content, geometric composition and related substances from the benzylic side chain require separate analytical consideration when qualifying material for the receiving route.

Chemical identity

Chemical name
Methyl 3-methoxy-2-[2-(chloromethyl)phenyl]acrylate
CAS number
117428-95-2
Molecular formula
C12H13ClO3
Molecular weight
240.68 g/mol

Application context

Methoxyacrylate fungicide routes involving enestroburin and pyraoxystrobin use the E intermediate. The methoxyacrylate scaffold and benzylic chloromethyl connection must both match the required structure. State the E/Z specification and separation method separately from quantitative content. Review relevant side-chain conversion products or residual precursors for the selected source, and qualify any proposed alternative benzyl leaving group as a separate material.

Chemistry and synthetic role

The ester and methoxyalkene define one part of the scaffold; the ortho benzylic chloride is a separate functional handle. E/Z geometry concerns the alkene, not a chiral carbon centre.

Quality review

Define alkene geometry

Ask for a stereochemical drawing and a method that resolves E and Z before agreeing suitability for an E-specific route.

Check the chloromethyl group

Review structural evidence and any source-relevant hydroxymethyl or other benzylic relatives.

Separate isomer ratio from assay

Report quantitative content and E/Z composition on clearly stated bases; a single HPLC area value can conceal this distinction.

Preparing a specification

Specify the required E/Z composition, exact chloromethyl identity, assay basis, chromatographic resolution and route-relevant benzylic or ester-related impurities. Do not leave alkene geometry implicit in the CAS.

Packaging and storage

Confirm packaging format, net weight and transport arrangements for the selected grade, order quantity and destination. Request the applicable SDS and label to establish storage and handling conditions.

Documentation

Request the proposed specification, batch COA and current SDS. Confirm availability of the identity data and analytical methods relevant to the checks above; documents depend on the selected manufacturer and grade.

Procurement questions

How should the required E/Z composition be specified?

Include the target geometric structure, E/Z acceptance criteria and a method that separates the two forms, alongside quantitative assay.

Is E/Z testing an enantiomeric-purity test?

No. E and Z describe double-bond geometry rather than enantiomers.

Can another benzyl leaving group be accepted?

Only under a separately identified and qualified material specification.

Technical sources
  1. PubChem CID 53394840 — identity property recordNCBI / PubChem
  2. Methyl 2-(2-chloromethylphenyl)-3-methoxyacrylateColorcom Group
  3. CN107266316A — Synthesis of (E)-2-(2-chloromethylphenyl)-3-methoxy methyl acrylateChina National Intellectual Property Administration