1403580-37-9

Basic information

• Product Name: 4-(benzo[b]thiophen-3-yl)-5-(2-ethoxybenzo[b]thiophen-3-yl)-2-phenylthiazole
• CAS NO: 1403580-37-9
• Molecular Weight: 469.652
• Mol File: 1403580-37-9.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 4-(benzo[b]thiophen-3-yl)-5-(2-ethoxybenzo[b]thiophen-3-yl)-2-phenylthiazole(CAS DataBase Reference)
• NIST Chemistry Reference: 4-(benzo[b]thiophen-3-yl)-5-(2-ethoxybenzo[b]thiophen-3-yl)-2-phenylthiazole(1403580-37-9)
• EPA Substance Registry System: 4-(benzo[b]thiophen-3-yl)-5-(2-ethoxybenzo[b]thiophen-3-yl)-2-phenylthiazole(1403580-37-9)

Safety Data

• Hazardous Substances Data: 1403580-37-9(Hazardous Substances Data)

Upstream product

• 171364-86-6 (2-benzo[b]thiophen-3-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 
• 1403580-57-3 4-bromo-5-(2-ethoxybenzo[b]thiophen-3-yl)-2-phenylthiazole 
• 105361-77-1 2-phenyl-4,5-dibromo-thiazole 
• 1403580-55-1 2-(2-ethoxybenzo[b]thiophen-3-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 

Downstream Products

• 1403580-43-7 C₂₇H₁₉NOS₃ 

Relevant articles and documents

Subsequent chemical reactions of photochromic 4,5-dibenzothienylthiazoles

4,5-Dibenzothienylthiazole derivatives having leaving groups at the reactive 2-positions of benzothiophene rings have been synthesized, and their photochromic ring-closing reaction followed by spontaneous elimination and substitution reactions have been studied. A 4,5-dibenzothienylthiazole having an ethoxy group and a hydrogen atom at each 2-position of the benzothienyl ring underwent elimination to generate a condensed aromatic structure upon the addition of acid. 4,5-Dibenzothienylthiazoles having an ethoxy or methyl groups at the 2-position of the benzothienyl rings showed photochromism both in hexane and in methanol solutions with photocyclization quantum yields as high as 60 %. Upon the addition of acid to the methanol solutions of closed-ring isomers of dibenzothienylthiazoles, the substitution of the ethoxy group with a methoxy group occurred. The generation and rearrangement of the carbocation intermediate formed by elimination of the ethoxy group from the closed-ring isomers were apparent from the chemical structure of methoxy-substituted products. Subsequent chemical reactions are demonstrated for photoproducts of 4,5- dibenzothienylthiazoles possessing leaving groups at the 2-position of benzothienyl rings. Closed-ring isomers of 4,5-dibenzothienylthiazoles having an ethoxy group underwent an alcoholysis reaction under acidic conditions accompanying rearrangement of carbocation intermediates. Copyright