A metal-free CÀ P bond cleavage reaction is described herein. Phosphoramides, a phosphine source, can react with alcohols to produce phosphonate and phosphinate derivatives in the presence of a disulfide. PÀ H 2 , P-alkyl, and P,P-dialkyl phosphoramides can be used as substrates to obtain the corresponding pentavalent phosphine products.

No abstract

An environmentally friendly oxone (20 mol%) catalyzed esterification of carboxylic acids with alcohols has been developed, providing an attractive alternative to the construction of valuable carbonyl esters.

No abstract

A recyclable and non‐phosphine solid palladium (II) catalyst was prepared and characterized by HR‐MS, FT‐IR, XPS, EDS, TGA, SEM, TEM and ICP. The Pd‐catalyst exhibited high‐performance catalytic activity in Suzuki and Heck C‐C coupling reactions in an environmentally benign water medium. Further, the Pd‐catalyst (Z4) can be reused for 15 times with little decrease of activity through simple and efficient recovery. In addition, the turn‐over number (TON) of Pd‐ catalyst can reach 380 at room temperature. These results proved that the Pd‐catalyst has a stable structure and can be recycled many times, making the process sustainable.

An effective method for the P-alkylation of N-arylphosphinecarboxamides was demonstrated. Primary N-arylphosphinecarboxamides without additional protection underwent P-monoalkylation with various alkyl halides in the presence of cesium carbonate as a promoter. The reactivity of phosphinecarboxamides was also explored.