62640-61-3

Upstream product

• 552-89-6 2-nitro-benzaldehyde 
• 3433-80-5 1-Bromo-2-bromomethyl-benzene 
• 609-73-4 o-nitroiodobenzene 
• 2039-88-5 2-bromostyrene 
• 23308-83-0 (2-nitrobenzyl)triphenylphosphonium bromide 
• 6630-33-7 ortho-bromobenzaldehyde 
• 36901-75-4 (2-bromobenzyl)triphenylphosphonium bromide 

Downstream Products

• 128651-58-1 2-Acetylamino-2'-bromostilbene 
• 223379-66-6 (E)-2-Bromo-2'-(triphenylphosphoranylidene)aminostilbene 
• 223379-71-3 N-[3-(2-Bromo-phenyl)-quinolin-2-yl]-4-methyl-benzenesulfonamide 
• 223379-82-6 6-tosyl-6H-indolo[2,3-b]quinoline 
• 243-38-9 6H-quinindoline 
• 114414-78-7 neocryptolepine 
• 223379-59-7 (E)-2-Amino-2'-bromostilbene 

Relevant academic research and scientific papers

Wittig Olefination Using Phosphonium Ion-Pair Reagents Incorporating an Endogenous Base

Despite common perception, the use of strong bases in Wittig chemistry is utterly unnecessary: we report a series of novel ion-pair phosphonium carboxylate reagents which are essentially "storable ylides". These reagents are straightforwardly prepared in excellent yields, and their fluxional nature permits clean olefination of a broad range of aldehydes and even hemiacetals.

Iminophoshorane-mediated synthesis of the alkaloid cryptotackieine

A new synthesis of the alkaloid cryptotackieine based on the stepwise formation of the pyridine and indole ring is described. The key step, formation of the appropriate 3-arylquinoline, involves a Staudinger/aza- Wittig/electrocyclic ring-closure process.