1999
DOI: 10.1021/jo990954b
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Allylic Sulfones in Solid-Phase Synthesis:  Preparation of Cyclobutylidenes

Abstract: Polymer-bound allyl sulfones (cf. 9) were utilized in geminal cycloalkylations with epichlorohydrin to generate a cis-phenylsulfonylcyclobutanol derivative (cf. 11) in one step. In the final step of this solid-phase synthetic sequence, cuprate, organomolybdenum, and organopalladium reagents were screened to obtain an optimal protocol for “traceless” cleavage of cyclobutylidene products from the resin. Among these, palladium-catalyzed allylic alkylation was the most efficient. In addition, highly regioselective… Show more

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Cited by 48 publications
(38 citation statements)
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“…4), der zur Bildung von trisubstituierten Alkenen und Cyclobutylidenen führt 9. Die nucleophile Substitution der Produkte gelang durch Allylierung mit Grignard‐Reagentien9a oder – milder und allgemein anwendbarer – durch Palladiumkatalyse (PACT‐RH 2 CHCsp 2 =Csp 2 R 2 ) 9b…”
Section: Alkenbildungunclassified
“…4), der zur Bildung von trisubstituierten Alkenen und Cyclobutylidenen führt 9. Die nucleophile Substitution der Produkte gelang durch Allylierung mit Grignard‐Reagentien9a oder – milder und allgemein anwendbarer – durch Palladiumkatalyse (PACT‐RH 2 CHCsp 2 =Csp 2 R 2 ) 9b…”
Section: Alkenbildungunclassified
“…An allylic sulfone linker created by Kurth and co‐workers (Table 2, entry 4) results in the generation of trisubstituted alkenes and cyclobutylidenes 9. Nucleophilic displacement of the products was effected by allylic alkylation with Grignard reagents9a or under milder and more general palladium catalysis9b (PACT RH 2 CHCsp 2 =Csp 2 R 2 ).…”
Section: Alkene Formationmentioning
confidence: 99%
“…Cheng et al. prepared the lithium PS‐DVB sulfinate‐based microsphere (PS‐SO 2 ‐Li) by treating PS‐Li with SO 2 . In other words, the sulfone group was introduced into the surface of PS‐DVB microsphere (Fig.…”
Section: Functionalization Of Ps‐dvb Microspherementioning
confidence: 99%