122334-22-9

Upstream product

• 122334-19-4 (1RS,1'RS,7aRS)-1-<3'-(diphenylphosphinoyl)-1'-methylpropyl>-7a-methyl-1,2,3,6,7,7a-hexahydro-5H-inden-5-one 
• 1120-73-6 2-methyl-2-cyclopenten-1-one 
• 17668-60-9 trans-crotyldiphenylphosphine oxide 
• 108644-01-5 (1'RS,1''E,2SR,2'E,3SR)-3-<3'-(diphenylphosphinoyl)-1'-methylprop-2'-enyl>-2-methyl-2-(3''-oxobut-1''-enyl)cyclopentan-1-one 
• 122334-18-3 (1'RS,2RS,3RS)-3-<3'-(diphenylphosphinoyl)-1'-methylpropyl>-2-methyl-2-(3''-oxobutyl)cyclopentan-1-one 

Relevant academic research and scientific papers

Use of β-Sulfonyl Vinyl Ketones as Equivalents to Vinyl Ketones in Robinson Annelation. Convergent, Highly Stereoselective Preparation of a Hydrindanol Related to Vitamin D from 2-Methylcyclopent-2-enone and Lithiated (E)-But-2-enyldiphenylphosphine Oxide

Conjugate addition of lithiated (E)-but-2-enyldiphenylphosphine oxide (3) to 2-methylcyclopent-2-enone (2) in tetrahydrofuran at -20 deg C generates the enolate 8, which reacts rapidly with a series of β-sulfonyl vinyl ketones to generate unsaturated dike

Preparation of Hydrindenones from 2-Methylcyclopent-2-enone and the Carbanion of (E)-But-2-enyldiphenylphosphine Oxide: Efficient Enolate Trapping with β-Sulphonylvinyl Ketones

The β-sulphonylvinyl ketones (5), (7), (9), and (10), easily prepared from β-(phenylthio)propionyl chloride or from methyl vinyl ketone, react efficiently with the enolate produced by the conjugate addition of the carbanion of (E)-but-2-enyldiphenylphosph