83113-34-2

Basic information

• Product Name: benzyl 3,3'-diethyl-4,4'-dimethyl-5'-t-butoxycarbonyldipyrromethane-5-carboxylate
• Synonyms: benzyl 3,3'-diethyl-4,4'-dimethyl-5'-t-butoxycarbonyldipyrromethane-5-carboxylate
• CAS NO: 83113-34-2
• Molecular Weight: 464.605
• Mol File: 83113-34-2.mol
• Article Data: 4

Chemical Properties

• CAS DataBase Reference: benzyl 3,3'-diethyl-4,4'-dimethyl-5'-t-butoxycarbonyldipyrromethane-5-carboxylate(CAS DataBase Reference)
• NIST Chemistry Reference: benzyl 3,3'-diethyl-4,4'-dimethyl-5'-t-butoxycarbonyldipyrromethane-5-carboxylate(83113-34-2)
• EPA Substance Registry System: benzyl 3,3'-diethyl-4,4'-dimethyl-5'-t-butoxycarbonyldipyrromethane-5-carboxylate(83113-34-2)

Safety Data

• Hazardous Substances Data: 83113-34-2(Hazardous Substances Data)

Upstream product

• 123-54-6 acetylacetone 
• 83089-91-2 benzyl 3-ethyl-2-iodo-4-methylpyrrole-5-carboxylate 
• 51089-83-9 benzyl 4-ethyl-3-methyl-1H-pyrrole-2-carboxylate 
• 82448-72-4 tert-butyl 5-acetoxymethyl-4-ethyl-3-methylpyrrole-2-carboxylate 
• 3750-36-5 benzyl 5-(acetoxymethyl)-4-ethyl-3-methyl-1H-pyrrole-2-carboxylate 
• 75488-15-2 tert-butyl 4-ethyl-3-methyl-1H-pyrrole-2-carboxylate 
• 967-38-4 2-(benzyloxycarbonyl)-4-ethyl-3-methylpyrrole-5-carboxylic acid 
• 2386-27-8 benzyl 4-acetyl-3,5-dimethylpyrrole-2-carboxylate 
• 1925-61-7 benzyl 4-ethyl-3,5-dimethylpyrrole-2-carboxylate 
• 5396-89-4 benzyl acetoacetate 
• 23466-29-7 4-ethyl-3-methyl-pyrrole-2-carboxylic acid 
• 31896-92-1 4-ethyl-3,5-dimethyl-pyrrole-2-carboxylic acid tert-butyl ester 

Relevant articles and documents

Metal-catalyzed oxidative cyclizations of a,c-biladiene salts bearing 1- and/or 19-arylmethyl substituents: Macrocyclic products and their chemistry

Several 1-mono- and 1,19-bis(p-arylmethyl)-a,c-biladiene salts were prepared and subjected to either copper(II)- or chromium(III)-assisted oxidative cyclization to yield numerous products in which the 1- or 19- substituent is adapted, eliminated, or rearranged to other points on the tetrapyrrole. For example, cyclization using copper(II) acetate of 19- ((ethoxycarbonyl)methyl)-2,3,7,8,12,13,17,-18-octamethyl-19-(p-tolylmethyl)- a,c-biladiene dihydrobromide (25) yielded the copper(II) 20- ((ethoxycarbonyl)methyl)-1-(p-tolylmethyl)-2,3,7,8,12,13,17,18-octamethyl- 1,20-dihydroporphyrin (42), copper(II) 20-(ethoxycarbonyl)-3-methylidene- 2,3,7,8,12,13,17,18-octamethyl-2-(p-tolylmethyl)-chlorin (44), copper(II) 20- (ethoxycarbonyl)-2-methylidene-2,3,7,8,12,13,17,18-octamethyl-3-(p- tolylmethyl)chlorin (45), and three porphyrins: copper(II) 20- (ethoxycarbonyl)-2,3,7,8,12,13,17,18-octamethylporphyrin (3), copper(II) 2,3,7,8,12,13,17,18-octamethyl-20-p-tolylporphyrin (50), and copper(II) 20- (ethoxycarbonyl)-2,3,7,8,12,13,17,18-octamethyl-5-(p-tolylmethyl)porphyrin (47). Formation of porphyrin 47 and the intermediate chlorins 44 and 45 suggests the stepwise migration of the arylmethyl group from the 1-position in compound. 42. The isolation of products from cyclization reactions of various 1,19-arylmethyl-substituted a,c-biladiene salts provides further insight into the mechanisms of metal-assisted oxidative cyclization of a,c- biladiene salts to give cyclic tetrapyrroles. Macrocyclizations of a,c- biladienes such as 25 using chromium(III) afford good yields of the metal- free 1-substituted compounds such as 43.

Reactions on solid supports part II: a convenient method for synthesis of pyrromethanes using a montmorillonite clay as catalyst

α-Acetoxymethylpyrroles couple with α-free pyrroles in presence of Montmorillonite clay to form unsymmetrical pyrromethanes in excellent yields. Symmetrical pyrromethanes were also prepared in a similar manner by clay catalysed self-condensation of α-acet