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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 442140Generated: October 29, 2026

Phosphorus sulfide (P2S5) → 2-Methyl-8-cyano-5,6,7,8-tetrahydroquinoline

https://huagongshe.com/reaction/442140

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPhosphorus sulfide (P2S5)HCID 14817—
Reactant2-Methyl-5,6,7,8-tetrahydroquinoline-8-carboxamideHCID 12278968—
Product2-Methyl-8-cyano-5,6,7,8-tetrahydroquinolineHCID 20358412—

Reaction Steps

2-Methyl-5,6,7,8-tetrahydroquinoline-8-carboxamide was treated with P2S5 to give 2-methyl-8-cyano-5,6,7,8-tetrahydroquinoline which was treated with H2S (both reactions being carried out by the method described in Example 8 to give the title compound as colourless needles from ethylacetate (28%) m.p. 98° (Found: C, 64.32; H, 6.93; N, 13.52%, C11H14N2S requires: C, 64.04; H, 6.84; N, 13.58%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04044138
Source datasetuspto-grants-1977_08
ORD IDord-2beb2103612b408ebf6f7aa57ef199b6
Source noteuspto-grants-1977_08