1043872-35-0

Upstream product

• 1043872-30-5 (E)-N,N-dimethyl-4-(4,5-dimethyl-1,3-dithiol-2-ylidene)but-2-enylideniminium tetrafluoroborate 
• 1076-59-1 3-phenyl-4H-isoxazol-5-one 
• 1043872-32-7 (E,E)-N,N-dimethyl-6-(4,5-dimethyl-1,3-dithiol-2-ylidene)hexa-2,4-dienylideniminium tetrafluoroborate 
• 181046-74-2 (E)-4-(4,5-dimethyl-1,3-dithiol-2-ylidene)but-2-enal 

Downstream Products

• 1043872-34-9 (Z)-4-[2-(4,5-dimethyl-1,3-dithiol-2-ylidene)ethylidene]-3-phenyl-5-isoxazolone 

Relevant academic research and scientific papers

Iminium salts of ω-dithiafulvenylpolyenals: An easy entry to the corresponding aldehydes and doubly proaromatic nonlinear optic-phores

(Chemical Equation Presented) A short, high-yielding route to u-difhiafulvenylpolyenals (1) via the corresponding iminium salts (2) and starting from trimethyl-1,3-dithiolium tetrafluoroborate is reported. The Knoevenagel reactions of either 1 or 2 with isoxazolone-containing acceptors afford merocyanines 7 and 9, in a process that is often accompanied by a vinylene-shortening side reaction. Experimental and theoretical studies reveal that compounds 7 and 9, featuring two proaromatic end groups, are strongly polarized and show good second-order nonlinear optical responses.