21733-35-7

Upstream product

• 3528-17-4 2,3-dihydro-4H-[1]benzothiopyran-4-one 
• 555-16-8 4-nitrobenzaldehdye 

Downstream Products

• 76238-55-6 3-[1-(4-Nitro-phenyl)-meth-(Z)-ylidene]-thiochroman-4-ol 
• 79530-09-9 3-(4-Nitrobenzyl)-4H-1-benzothiopyran-4-on 
• 1369589-10-5 3'-(4-methylphenyl)-4'-(4-nitrophenyl)-40H-spiro[thiochromene-3,5'-isoxazol]-4(1H)-one 

Relevant academic research and scientific papers

Synthesis of 3-Benzyl-4-chromones and 3-Benzyl-1-thio-4-chromones

3-Benzyl-4-chromones 6 and 7 and 3-benzyl-1-thio-4-chromones 8-10 have been synthesized by the piperidine-catalyzed reaction of chroman-4-one or 1-thio-chroman-4-one with benzaldehydes or by the double bond isomerization of the corresponding 3-benzylidene