143237-85-8

Upstream product

• 143237-81-4 (1S*,2R*)-1-(N,N-diisopropylamino)-1-oxo-2-benzyl-Δ³-phospholene 
• 921-26-6 N,N-diisopropylphosphoramide dichloride 
• 91166-39-1 (E)-penta-2,4-dien-1-ylbenzene 
• 143237-81-4 (1S*,2R*)-1-(N,N-diisopropylamino)-1-oxo-2-benzyl-Δ³-phospholene 

Downstream Products

• 143237-91-6 1-(N,N-diisopropylamino)-2,2-dibenzyl-1-oxophospholane 
• 143237-90-5 (2S*,5S*)-1-(N,N-diisopropylamino)-2,5-dibenzyl-1-oxophospholane 
• 143291-72-9 meso,cis-1-(N,N-diisopropylamino)-2,5-dibenzyl-1-oxophospholane 
• 133471-51-9 (2S^*,5S^*)-2,5-dibenzyl phospholanic acid 

Relevant academic research and scientific papers

PREPARATION OF (2S*,5S*)-2,5-DIBENZYL PHOSPHOLANIC ACID.

Phosphenium ion 1 underwent cheletropic cycloaddition with E-1-benzylbutadiene 2b to afford cyclic phosphonium salts produced phosphinamides 6a and 6b in a 3:1 ratio.Three chemical steps coverted phosphinamide 6a to the title compound 12b.

Preparation of (2S*,5S*)-2,5-Dibenzylphosphonic Acid

The cheletropic cycloaddition of +AlCl4- with 1-substituted dienes at 0 deg C afforded 1-(N,N-diisopropylamino)-1-chloro-2-alkyl-Δ3-phospholenium tetrachloroaluminates.The stereoselectivity of these reactions ranged from 5:1 to 10