113017-77-9

Upstream product

• 110-65-6 1,4-dihydroxybut-2-yne 
• 1079-66-9 chloro-diphenylphosphine 

Downstream Products

• 123565-78-6 3,3'-Bis(diphenylphosphinyl)-4,4',5,5'-tetrahydro-3,3'-bi(3H-pyrazolyl) 
• 138420-87-8 (4R,5S)-4,5-Bis-(diphenyl-phosphinoyl)-2,2-dimethyl-7-oxa-1-aza-bicyclo[2.2.1]heptane 
• 121044-59-5 C₃₄H₃₅NO₃P₂ 
• 121044-60-8 (2R,4S,5R)-4,5-Bis-(diphenyl-phosphinoyl)-2-phenyl-7-oxa-1-aza-bicyclo[2.2.1]heptane 
• 123542-08-5 1',3'-Dihydro-1',1',3',3'-tetraphenyldispiro<1,3>diphosphole-5',1-cyclopropane>-1',3'-diium diiodide 
• 123542-07-4 1,1'-Bis(methyldiphenylphosphonio)bicyclopropyl diiodide 
• 123542-09-6 1',1',3',3'-Tetraphenyldispiro<1,3λ⁵>diphosphole-5',1-cyclopropan>-1'-ium iodide 
• 123565-79-7 1,1'-Bis(diphenylthiophosphinyl)bicyclopropyl 
• 123542-06-3 1,1'-Bis(diphenylphosphino)bicyclopropyl 
• 116011-73-5 (E)-1,4-Dichloro-2,3-bis(diphenylphosphino)-2-buten 
• 116011-74-6 s-trans-2,3-Bis(diphenylphosphino)-1,3-butadien 
• 192449-15-3 (R,R)-2,3-Bis(diphenylphosphinoyl)butane 
• 74839-84-2 (R,R)-chiraphos 
• 94665-46-0 (2S,3S)-(-)-2,3-bis(diphenylphosphinyl)butane 

Relevant academic research and scientific papers

2,3-BIS(DIPHENYLPHOSPHINYL)-1,3-BUTADIENE VIA A DOUBLE -SIGMATROPIC REARRANGEMENT. A REINVESTIGATION OF THE REACTION OF 2-BUTYNE-1,4-DIOL WITH CHLORODIPHENYLPHOSPHINE

Contrary to previous reports, the reaction of 2-butyne-1,4-diol with chlorodiphenylphosphine yields 2,3-bis(diphenylphosphinyl)-1,3-butadiene 3 instead of the 1,4-isomer.The structure of the product has been elucidated from (1)H, (13)C, and (31)P-NMR spec

Synthesis of the chiral diphosphine ligand 2,3-bis(diphenylphosphino)butane (CHIRAPHOS)

A new synthesis of CHIRAPHOS starting from readily available 2,3-bis(diphenylphosphinyl)- 1,3-butadiene has been devised. The key step of the synthesis is the hydrogenation of the diene to rac-2,3-bis(diphenylphosphinyl)butane. This reduction can be conve