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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1910463Generated: October 31, 2026

Water → HCID 86687865, compound

https://huagongshe.com/reaction/1910463

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
Reactant3-Methylhexanedioic acidHCID 12292—
ReactantSodium HydroxideHCID 14798—
ReactantThiosemicarbazideHCID 2723789—
SolventPhosphorus oxychlorideHCID 24813—
ProductHCID 86687865HCID 86687865106.3%

Reaction Conditions

Temperature90 °C

Reaction Steps

A mixture of 3-methyl adipic acid (5.00 g, 31.22 mmol) and thiosemicarbazide (5.69 g, 62.43 mmol) in POCl3 (45 mL) was heated at 90° C. for 4 h. The reaction was cooled to room temperature and poured into a mixture of ice and water. Sodium hydroxide pellets were added to the mixture until it was basic (pH 14). The white precipitate was collected by suction filtration, rinsed with water and dried to provide 5,5′-(2-methylbutane-1,4-diyl)-bis(1,3,4-thiadiazol-2-amine) (1003, 8.97 g). 1H NMR (300 MHz, DMSO-d6) δ 7.00 (s, 4H), 2.89-2.81 (m, 3H), 2.89-2.81 (m, 3H), 2.69 (dd, J=7.6, 7.6 Hz, 1H), 1.89-1.46 (m, 3H), 0.94 (d, J=6.6 Hz, 3H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08604016B2
Source datasetuspto-grants-2013_12
ORD IDord-42aa46ffed48413bb1040dc8518d7c6d
Source noteuspto-grants-2013_12