883898-63-3

Upstream product

• 1351973-44-8 3-(4,5-diphenyl-1,3-oxazol-2-yl)-2-naphthol 
• 64-19-7 acetic acid 
• 51420-59-8 4-formyl-3-hydroxynaphthoic acid methyl ester 
• 883898-61-1 2-oxo-1,2-diphenylethyl 4-formyl-3-methoxy-2-naphthoate 
• 883898-58-6 methyl 4-formyl-3-methoxy-2-naphthoate 
• 883898-62-2 3-(4,5-diphenyl-1,3-oxazol-2-yl)-2-methoxy-1-naphthaldehyde 

Downstream Products

• 1351973-38-0 5'-allyloxy-5-(4,5-diphenyl-1,3-oxazol-2-yl)-1',3',3'-trimethylspiro[benzo[f]chromene-3,2'-indoline] 
• 1351973-37-9 1'-allyl-5-(4,5-diphenyl-1,3-oxazol-2-yl)-5'-methoxy-3',3'-dimethylspiro[benzo[f]chromene-3,2'-indoline] 

Relevant academic research and scientific papers

Photochromic and thermochromic spiranes. 34.*synthesis of photochromic 5-(4,5-diphenyl-1,3-oxazol-2-yl)-substituted spirobenzochromeneindolines

A simple and effective method is proposed for the synthesis of 4,5-diphenyloxazolyl-substituted o-hydroxynaphthaldehydes. Photochromic spirobenzochromeneindolines containing a 4,5-diphenyl-oxazole group at position 5 of the benzochromene fragment were obtained. In the cyclic form the new (diphenyloxazolyl)-substituted spiropyrans exhibit luminescent properties.

Spiropyrans and spirooxazines. 3. Synthesis of photochromic 5′-(4,5-diphenyl-1,3-oxazol-2-yl)-spiro[indoline-2,3′-naphtho[2,3-b] pyran]

The reaction of 2-hydroxy-3-(4,5-diphenyl-1,3-oxazol-2-yl)-1-naphthaldehyde with 1,2,3,3-tetramethyl-3H-indolium perchlorate afforded photochromic spiro[indoline-2,3′-naphthopyran] containing a 4,5-diphenyloxazole group in position 5′ of the naphthopyran