80918-70-3

Upstream product

• 7012-18-2 9-bromo-2,7-dichlorofluorene 
• 603-35-0 triphenylphosphine 

Downstream Products

• 23000-29-5 9-benzylidene-2,7-dichloro-9H-fluorene 
• 80918-84-9 (E)-2,7-dichloro-9-(3-phenylallylidene)-9H-fluorene 
• 80918-73-6 2,7-dichloro-9-(3-methyl-benzylidene)-fluorene 
• 80918-74-7 2,7-Dichloro-9-(4-methyl-benzylidene)-9H-fluorene 
• 80918-72-5 2,7-dichloro-9-(2-methyl-benzylidene)-fluorene 
• 80918-86-1 9-(4-Aldehydobenzylidene)-2,7-dichlorofluorene 
• 80918-76-9 2,7-dichloro-9-(3-chloro-benzylidene)-fluorene 
• 4364-35-6 2,7-dichloro-9-(4-chloro-benzylidene)-fluorene 
• 80918-77-0 9-(3-bromo-benzylidene)-2,7-dichloro-fluorene 
• 80918-78-1 9-(4-bromo-benzylidene)-2,7-dichloro-fluorene 
• 80918-81-6 4-(2,7-dichloro-fluoren-9-ylidenemethyl)-anisole 
• 80918-75-8 2,7-dichloro-9-(2-chloro-benzylidene)-fluorene 
• 80918-79-2 2,7-dichloro-9-(2-nitro-benzylidene)-fluorene 
• 4364-36-7 2,7-dichloro-9-(3-nitro-benzylidene)-fluorene 

Relevant academic research and scientific papers

Studies on Ylids: Isolation and Reactions of a New Stabilized Phosphonium Ylid

(2,7-Dichlorofluorenylidene)triphenylphosphonium ylid (2), a new phosphonium ylid, has been synthesized by the action of ethanolic sodium ethoxide on its precursor (2,7-dichlorofluorenyl)triphenylphosphonium bromide (1).It reacts with a series of substituted benzaldehydes (3a-n) to give 9-substituted-benzylidene-2,7-dichlorofluorenes (4a-n) in 45-80 percent yields.A similar reaction of 2 with furfural and cinnamaldehyde gives 9-furfurylidene-2,7-dichlorofluorene (4o) and 9-cinnamylidene-2,7-dichlorofluorene (4p)in good yields.The reaction of 2 with isophthaldehyde and terephthaldehyde gives 9(m-formylbenzylidene)-2,7-dichlorofluorene (4q) and 9-(p-formylbenzylidene)-2,7-dichlorofluorene (4r) or 2,2',7,7'-tetrachloro-isophthalal-9,9-difluorene and 2,2',7,7'-tetrachloro-terephthal-9,9'-difluorene respectively depending upon the reaction conditions.