30690-63-2

Upstream product

• 79033-56-0 3,4-Dioxo-2-phenyl-1-cyclobuten-1-ylthiocyanat 
• 22315-46-4 bromo-phenyl-cyclobutenedione 
• 22118-93-0 3-chloro-4-(4-phenyl)cyclobut-3-ene-1,2-dione 
• 35947-27-4 3-Mercapto-4-phenyl-3-cyclobuten-1,2-dion 

Downstream Products

• 79033-44-6 3,3'-Thiobis<(E)-2-oxo-4-phenyl-3-butensaeure-methylester> 

Relevant academic research and scientific papers

Preparation and Reactions of 3-Phenyl-4-pseudohalocyclobutenediones

3-Phenyl-4-pseudohalocyclobutenediones 2, 3 are prepared from 3-halo-4-phenylcyclobutenediones.The thio- and selenoethers 4 and the thio- and selenoureas 5 are obtained from 2 and 3 as secondary products.The reaction products of 2a and 3a with aromatic and heteroaromatic 1,2-diamines are described.Action of chlorine on 3a leads to the chloroformimidoyl chloride 9.On treatment with bases the four-membered ring of 2a is cleaved.