340254-96-8

Upstream product

• 340254-90-2 5,5',5''-tri-tert-butyl-2,2',2''-trimethoxytriphenylmethane 
• 340254-91-3 [tris-(5-tert-butyl-2-methoxy-phenyl)-methyl]-phosphinic acid 
• 340254-92-4 5-tert-butyl-3,3-bis-(5-tert-butyl-2-methoxy-phenyl)-3H-benzo[d][1,2]oxaphosphole 2-oxide 
• 340254-88-8 1-hydro-5-carbaphosphatrane 

Downstream Products

• 340254-93-5 3,6-di-tert-butyl-4b-(5-tert-butyl-2-methoxy-phenyl)-4bH-9,10-dioxa-9a-phospha-indeno[1,2-a]indene 

Relevant academic research and scientific papers

Reactions of 1-hydro-5-carbaphosphatrane: Tautomerization between five-coordinate and three-coordinate species

Oxidation, sulfurization, and selenation of a 1-hydro-5-carbaphosphatrane afforded the corresponding cyclic phosphonate, cyclic phosphonothioate, and cyclic phosphonoselenoate, respectively. These results indicate the existence of the tautomerization between the five-coordinate 5-carbaphosphatrane and the three-coordinate cyclic phosphonite.

Chemistry of carbaphosphatranes

A 5-carbaphosphatrane and a 6-carbaphosphatrane were synthesized by utilizing triarylmethyl-type tetradentate ligands. Their structures were determined by X-ray crystallographic analysis to reveal that they have nealy ideal trigonal bipyramidal structures with a perfectly anti-apicophilic arrangement. 1JPH and 1JPC values of carbaphosphatranes were shown to be extraordinarily large as an apical coupling constant. The reactivities of carbaphosphatranes based on the tautomerization with their corresponding phosphonites were demonstrated in some reactions. Copyright Taylor & Francis Group, LLC.

Reactivity of 1-hydro-5-carbaphosphatrane based on tautomerization between pentavalent phosphorane and trivalent cyclic phosphonite

The reaction behavior of 1-hydro-5-carbaphosphatrane (1a) was examined. Treatment of 1a with oxidants such as 3-chloroperoxybenzoic acid (mCPBA) and tBuOCl gave cyclic phosphonate 2 and 1-chloro-5-carbaphosphatrane (4), respectively, via cyclic phosphonit