197780-83-9

Basic information

• Product Name: 2-methyl-5-(9-triptycyl)benzaldehyde
• Synonyms: 2-methyl-5-(9-triptycyl)benzaldehyde
• CAS NO: 197780-83-9
• Molecular Weight: 372.466
• Mol File: 197780-83-9.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: 2-methyl-5-(9-triptycyl)benzaldehyde(CAS DataBase Reference)
• NIST Chemistry Reference: 2-methyl-5-(9-triptycyl)benzaldehyde(197780-83-9)
• EPA Substance Registry System: 2-methyl-5-(9-triptycyl)benzaldehyde(197780-83-9)

Safety Data

• Hazardous Substances Data: 197780-83-9(Hazardous Substances Data)

Upstream product

• 90050-59-2 5-bromo-2-methylbenzaldehyde 
• 1608-42-0 benzenedizolium-2-carboxylate 
• 197780-82-8 5-(9-anthracenyl)-2-methylbenzaldehyde 
• 462-80-6 benzyne 

Relevant articles and documents

New Molecular Devices: In Search of a Molecular Ratchet

The triptycene-substituted [3]- and [4]helicenes 1 and 2 were examined as possible molecular versions of mechanical ratchets, where the triptycene serves as the ratchet wheel and the hehcenes as pawl and spring. The syntheses of 1 and 2b are described. 1H NMR was employed to examine rotation around the triptycene/helicene single bond; at 20 °C rotation is frozen for both 1 and 2b but the NMR of 1 revealed a plane of symmetry, indicating that 1 cannot function as a unidirectional ratchet In contrast, NMR revealed that, like a ratchet, triptycvl[4]helicene 2b lacks the symmetry of 1 and has a barrier to rotation of 24.5 kcal/mol, but spin polarization transfer NMR expenments indicated the triptycene in 2b nonetheless rotates equally in both directions. That outcome is rationalized from the standpoint of thermodynamics.