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|  __ \\   \ \\/ //  /_   _//   / _ \\  |  __ \\  
| |  \ ||   \ ` //   `-| |,-   / //\ \\ | |  \ || 
| |__/ ||    | ||      | ||   |  ___  ||| |__/ || 
|_____//     |_||      |_||   |_||  |_|||_____//  
 -----`      `-`'      `-`'   `-`   `-`  -----`

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Text this: Intramolecular acylation of α-sulfinyl carbanions with masked α,β-unsaturated esters: a general strategy to 5-alkylidene-2-cyclopentenones