52182-93-1

Upstream product

• 67-56-1 methanol 
• 82238-33-3 trans-9-phenylselenoxanthene 10-oxide 
• 124-41-4 sodium methylate 
• 52183-06-9 9-phenylselenoxanthene 10-oxide 
• 922-67-8 propynoic acid methyl ester 
• 30673-29-1 9-phenylselenoxanthene 
• 89-98-5 2-chloro-benzaldehyde 
• 23974-72-3 sodium phenylselenide 
• 82238-23-1 cis-9-Phenylselenoxanthene-N-(p-toluenesulfonyl)-selenilimine 
• 82238-23-1 trans-9-Phenylselenoxanthene-N-(p-toluenesulfonyl)selenilimine 
• 82238-25-3 cis-9-Phenylselenoxanthene-N-(benzenesulfonyl)selenilimine 
• 88048-85-5 phenyl[o-(phenylseleno)phenyl]methanol 
• 88048-84-4 2-formylphenyl phenyl selenide 

Relevant academic research and scientific papers

Synthesis, Stereochemistry and Reactions of Selenoxanthen-10-io(alkoxalyl alkoxycarbonyl)methanides and Related Compounds

Selenoxanthen 10-oxides (5a-d) reacted with methyl propiolate, dimethyl and diethyl acetylenedicarboxylates to afford selenoxanthen-10-iometanides (6a-i).The 9-isopropyl derivative gave only trans-ylides and the 9-phenyl congener formed cis- and trans-ylides.The stereochemistry is discussed on the basis of the nuclear magnetic resonance spectral data.Reduction of the selenoxanthenium ylides with sodium borohydride afforded the ylide lactones (16a-c) and the ylide alcohols (17a-f).The Product ratio depended on the solvent used.Keywords - selenium ylide; selenoxide; selenoxanthene; methyl propiolate; dimethyl acetylenedicarboxylate; stereoisomer; stereochemistry; sodium borohydride reduction; lactonization

CHEMISTRY OF CIS- AND TRANS-9-PHENYLSELENOXANTHENE-N-ARYLSULFONYLSELENILIMINES

cis- and trans-9-Phenylselenoxanthene-N-(arylsulfonyl)selenilimines were synthesized and isolated.Their stereochemistry was ascertained from the NMR spectra.Cis isomers reacted with chloramine-T or -B by an SN2 type substitution to form trans i

STABLE SELENOXANTHENIUM YLIDES : SYNTHESIS AND NEW REDUCTIVE CYCLIZATION OF SELENOXANTHEN-10-IO(ALKOXALYL ALKOXYCARBONYL)METHANIDES AND THEIR RELATED COMPOUNDS

Stereoisomers of 9-substituted selenoxanthen-10-io(alkoxalyl alkoxycarbonyl)methanides were prepared from the corresponding selenoxides and activated acetylenes.In the reaction of 9-phenylselenoxanthene 10-oxide(1c) with methyl propiolate afforded an unexpected product, methyl 9-phenylselenoxanthen-9-ylpropiolate(5) together with ylide(2e).The selenonium ylides underwent new reductive cyclization with sodium borohydride to afford new cyclic selenonium ylides.