261896-16-6

Basic information

• Product Name: tetraethyl 1,5-dibenzyl-1,5,8,8bα-tetrahydro-4,8-diphenylcyclobuta[1,2-b:3,4-b']dipyridine-3,4aα,7,8aβ(4H,4bβH)-tetracarboxylate
• CAS NO: 261896-16-6
• Molecular Weight: 782.934
• Mol File: 261896-16-6.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: tetraethyl 1,5-dibenzyl-1,5,8,8bα-tetrahydro-4,8-diphenylcyclobuta[1,2-b:3,4-b']dipyridine-3,4aα,7,8aβ(4H,4bβH)-tetracarboxylate(CAS DataBase Reference)
• NIST Chemistry Reference: tetraethyl 1,5-dibenzyl-1,5,8,8bα-tetrahydro-4,8-diphenylcyclobuta[1,2-b:3,4-b']dipyridine-3,4aα,7,8aβ(4H,4bβH)-tetracarboxylate(261896-16-6)
• EPA Substance Registry System: tetraethyl 1,5-dibenzyl-1,5,8,8bα-tetrahydro-4,8-diphenylcyclobuta[1,2-b:3,4-b']dipyridine-3,4aα,7,8aβ(4H,4bβH)-tetracarboxylate(261896-16-6)

Safety Data

• Hazardous Substances Data: 261896-16-6(Hazardous Substances Data)

Upstream product

• 120533-76-8 diethyl 1-benzyl-1,4-dihydro-4-phenylpyridine-3,5-dicarboxylate 
• 623-47-2 propynoic acid ethyl ester 
• 100-46-9 benzylamine 
• 100-52-7 benzaldehyde 

Downstream Products

• 120533-76-8 diethyl 1-benzyl-1,4-dihydro-4-phenylpyridine-3,5-dicarboxylate 

Relevant articles and documents

Solution-dimerization of 4-aryl-1,4-dihydropyridines

On irradiation at λ ≥ 270 nm solutions of 4-aryl-1,4-dihydropyridines 1 yield cage dimers 2 as the main products beside small amounts of anti dimers 3. 1H-NMR data and X-ray crystal structure prove centrosymmetrical properties for both dimers with axially orientated 4-aryl substituents. Irradiation with filtered light (λ > 313 nm) leads to syn and anti dimers 4 and 3 in nearly equal yields. The poor yields of anti-dimers 3 on irradiation with unfiltered light are demonstrated to result from a partial cleavage back to their monomeric starting materials 1.