Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2370Generated: October 26, 2026

Diazomethane → methyl (+)-(1R,2S,3R)-3-hydroxy-2-pentyl-1-cyclopentaneacetate

https://huagongshe.com/reaction/2370

Reaction equation

Participants

RoleNameHCIDCharge
ReactantDiazomethaneHCID 9550—
Reactant(+)-(1R,2S,3R)-3-hydroxy-2-pentyl-1-cyclopentaneacetic acidHCID 11171909—
SolventDiethyl EtherHCID 3283—
Productmethyl (+)-(1R,2S,3R)-3-hydroxy-2-pentyl-1-cyclopentaneacetateHCID 7075801—

Reaction Steps

It is to be noted that (+)-(1R,2S,3R)-3-hydroxy-2-pentyl-1-cyclopentaneacetic acid, used as starting product in this variant of the process of the invention, can also be directly methylated, for example by reacting it with an excess of diazomethane in ether solution, to provide pratically pure methyl (+)-(1R,2S,3R)-3-hydroxy-2-pentyl-1-cyclopentaneacetate, which can then be converted into (+)-cis-Hedione® via oxidation.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05728866
Source datasetuspto-grants-1998_03
ORD IDord-5330fe2873fa4dd296b870c5f2f16b19
Source noteuspto-grants-1998_03