174468-18-9

Upstream product

• 68669-11-4 Bis[o-(bromomethyl)phenyl]phenylphosphine oxide 
• 110-52-1 1,4-dibromo-butane 
• 5414-19-7 1,1'-oxybis(2-bromo-ethane) 
• 111-24-0 1,5-dibromo-pentane 
• 629-03-8 1 ,6-dibromohexane 
• 31255-10-4 1,2-bis-(2-bromo-ethoxy)-ethane 
• 91-13-4 α,α'-dibromo-o-xylene 
• 626-15-3 1,3-bis-(bromomethyl)benzene 

Relevant academic research and scientific papers

Synthesis of phosphorus- and selenium-containing macrocycles and their complexation with Pd(II)Cl2

A one-pot reaction was developed to synthesize phosphorus- and selenium-containing macrocycles starting from selenium via reduction with KBH4, treatment with bis[o-(bromomethyl)phenyl]phenylphosphine oxide 1 and reduction with KBH4 followed by the addition of an appropriate dibromide. Thus, ten-to seventeen-membered macrocycles 3 having one phosphorus and two selenium atoms were synthesized. In this synthesis an eight-membered heterocycle 4 was also obtained. In addition, the condensation of compound 1 with selenium-containing diols 7 and 8 in the presence of sodium tert-butoxide gave macrocyclic ligands 9 and 10, respectively. Reaction of these macrocycles with palladium(n) chloride gave 1: 1 complexes, except 9 which gave a 2: 1 complex. The molecular structures of the macrocycles 3c, 3f and 10 as well as the 2: 1 palladium(II) complex 21 of related 2-(p-methyl-phenoxy)-2-oxo-1,3,6,2-dioxaselenaphosphocane 20 have been established by X-ray diffraction.

SYNTHESIS, PROPERTY, AND X-RAY CRYSTAL STRUCTURE OF NEW DIBENZOPHOSPHASELENOCINES

New phosphorus-selenium heterocycles, dibenzophosphaselenocines (1 and 2), have been prepared.The structure of the dibenzophosphaselenocines was determined by multinuclear nmr spectroscopy and X-ray diffraction analysis.