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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1823930Generated: October 30, 2026

Phosphorus oxychloride → 3-(5-Phenyl-oxazol-2-yl)-1,2,3,4-tetrahydro-isoquinoline

https://huagongshe.com/reaction/1823930

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPhosphorus oxychlorideHCID 24813—
Reactant3-(2-oxo-2-phenyl-ethylcarbamoyl)-3,4-dihydro-1H-isoquinoline-2-carboxylic acid tert butyl esterHCID 23570725—
Reactant3-(2-oxo-2-phenyl-ethylcarbamoyl)-3,4-dihydro-1H-isoquinoline-2-carboxylic acid benzyl esterHCID 66892649—
Product3-(5-Phenyl-oxazol-2-yl)-1,2,3,4-tetrahydro-isoquinolineHCID 22147680—

Reaction Steps

Dehydration of 3-(2-oxo-2-phenyl-ethylcarbamoyl)-3,4-dihydro-1H-isoquinoline-2-carboxylic acid benzyl ester (prepared in a similar manner as 3-(2-oxo-2-phenyl-ethylcarbamoyl)-3,4-dihydro-1H-isoquinoline-2-carboxylic acid tert butyl ester of Example 1) with POCl3 yields the following intermediate compound:

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07041681B2
Source datasetuspto-grants-2006_05
ORD IDord-8e945a81d1f74afca962ca54c293d4a7
Source noteuspto-grants-2006_05