63680-28-4

Basic information

• Product Name: but-2-yne-1,4-diyl dicarbamimidothioate dihydrochloride
• CAS NO: 63680-28-4
• Molecular Formula: C₆H₁₀N₄S₂*2ClH
• Molecular Weight: 275.2223
• Mol File: 63680-28-4.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 361.3°C at 760 mmHg
• Flash Point: 172.3°C
• Vapor Pressure: 2.09E-05mmHg at 25°C
• CAS DataBase Reference: but-2-yne-1,4-diyl dicarbamimidothioate dihydrochloride(CAS DataBase Reference)
• NIST Chemistry Reference: but-2-yne-1,4-diyl dicarbamimidothioate dihydrochloride(63680-28-4)
• EPA Substance Registry System: but-2-yne-1,4-diyl dicarbamimidothioate dihydrochloride(63680-28-4)

Safety Data

• Hazardous Substances Data: 63680-28-4(Hazardous Substances Data)

Upstream product

• 17356-08-0 thiourea 
• 821-10-3 1,4-Dichloro-2-butyne 

Downstream Products

• 86737-77-1 1,4-bis(benzylsulfanyl)but-2-yne 

Relevant articles and documents

Chalcogenation of 1,4-dichlorobut-2-yne with organic dichalcogenides in the system hydrazine hydrate–KOH

A reaction of organic dichalcogenides R2Y2 (R = Ph, Bn, Pr; Y = S, Se) with 1,4-dichlorobut-2-yne in the system hydrazine hydrate–KOH leads to four principal products: 1,4-bis(organylchalcogenyl)but-2-ynes, 1-organylchalcogenylbut-1-en-3-ynes, 4-organylchalcogenylbut-1-en-3-ynes, and 3(5)-methylpyrazole. The selectivity of the formation of individual products is determined by the ratio of the substrates used and the reaction temperature. A plausible mechanism of chalcogenation considered in the work agrees with the effect of the nature of chalcogene atoms and organic substituents R on stability of intermediates and products. The stabilization of carbanions by α chalcogene-containing groups corresponds to the following order: PhS > PhSe > BnS > BnSe > PrS.