133201-89-5

Upstream product

• 133201-85-1 4-((R)-tert-Butyl-phenyl-phosphinoyl)-butan-2-ol 
• 133253-02-8 (2R,3R)-3-[(E)-(S)-3-((S)-tert-Butyl-phenyl-phosphinoyl)-1-methyl-allyl]-2-methyl-2-(3-oxo-butyl)-cyclopentanone 
• 133201-85-1 4-((S)-tert-Butyl-phenyl-phosphinoyl)-butan-2-ol 
• 133201-84-0 (+)-3-<3'-<(S)-tert-butylphenylphosphinoyl>-1'-methylprop-2'-enyl>-2-methyl-2-(3''-oxobut-1''-enyl)cyclopentan-1-one 
• 133319-25-2 (S_p)-(E)-But-2-enyl-tert-butylphenylphosphine oxide 
• 38802-08-3 (S)-(-)-tert-butylmethylphenylphosphine oxide 
• 1120-73-6 2-methyl-2-cyclopenten-1-one 
• 133201-84-0 (2S,3S)-3-[(E)-(R)-3-((R)-tert-Butyl-phenyl-phosphinoyl)-1-methyl-allyl]-2-methyl-2-((E)-3-oxo-but-1-enyl)-cyclopentanone 
• 133319-29-6 (R_p)-(E)-But-2-enyl-tert-butylphenylphosphine oxide 
• 21448-79-3 (R)-tert-butylmethylphenylphosphine oxide 

Relevant academic research and scientific papers

The Preparation of (R)- and (S)-(E)-But-2-enyl-t-butylphenylphosphine Oxides and their Enantiospecific Conversion into Enantiomeric Hydrindenones related to Vitamin D

The individual enantiomers of (E)-but-2-enyl-t-butylphenylphosphine oxide have been prepared, and the lithiated carbanions of each undergo completely stereoselective conjugate addition with 2-methylcyclopent-2-enone to generate enolates, which upon reacti