Highly diastereoselective monoalkylation and Michael addition of N-(diphenylmethylene)glycinesultam under solid–liquid phase-transfer catalysis conditions using potassium carbonate as base

López, Anna Vidal; Pleixats, Roser

doi:10.1016/s0957-4166(98)00169-4

Cited by 32 publications

(7 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…25 Furthermore, cyclobutene 28 has recently been isolated as a stable and well-characterized silane derivative. 26 The synthesis of fuller-1,6-enyne substrates 30a-d and 2 has been carried out by 1,3-dipolar cycloaddition of the corresponding azomethine ylides, generated in situ from propargyl-containing glycine derivatives 29a-d and 1 27 and formaldehyde, to C 60 in refluxing chlorobenzene for one hour by following Prato's procedure. 10 The novel fulleropyrrolidines 30a-c and previously reported compounds 30d and 2 8 were obtained as stable brown solids in moderate yields (30-49% and 55-65%, respectively, based on recovered C 60 ) (Scheme 4).…”

Section: Thermally Induced [2+2] Cyclizations Ofmentioning

confidence: 99%

New Reactions in Fullerene Chemistry

Martı́n¹,

Altable²,

Filippone³

et al. 2007

Synlett

View full text Add to dashboard Cite

Unprecedented reactions involving the highly reactive double bonds of the fullerene sphere undergoing cobalt-catalyzed [2+2+1], thermally induced [2+2], and ene cycloadditions have been researched in a systematic way. In addition, the highly efficient retro-cycloaddition processes of fulleropyrrolidines (Prato cycloadducts) and fulleroisoxazolines are also discussed in detail. These new reactions in fullerene chemistry reveal that the unique scenario presented by the convex and highly reactive surface in fullerenes has not yet been appropriately exploited, and that it is still possible to create new and fascinating structures.

show abstract

Section: Thermally Induced [2+2] Cyclizations Ofmentioning

confidence: 99%

New Reactions in Fullerene Chemistry

Martı́n¹,

Altable²,

Filippone³

et al. 2007

Synlett

View full text Add to dashboard Cite

show abstract

“…[8] Since then, other photochemical [2+2] cycloadditions of fullerenes have been reported. [9] The synthesis of the starting fuller-1,6-enynes 10 a-e was carried out by 1,3-dipolar cycloaddition reaction of the azomethine ylides, which were generated in situ from propargyl-containing glycine derivatives [10] 9 a-e and formaldehyde, to [60]fullerene in refluxing chlorobenzene for 1 h following Pratos procedure. [11] The novel fulleropyrrolidines 10 a-c and previously reported compounds 10 d-e [7a-b] were obtained as stable brown solids in moderate yields (30-49 %; 55-65 % based on recovered C 60 ; Scheme 2).…”

mentioning

confidence: 99%

Thermal [2+2] Intramolecular Cycloadditions of Fuller‐1,6‐enynes

et al. 2006

View full text Add to dashboard Cite

show abstract

“…The synthesis of the novel starting 1,6-fullerenynes ( 2a − c ) was carried out by 1,3-dipolar cycloaddition reaction of the respective azomethine ylides, which were in turn generated in situ from methyl- or ethyl-propargyl containing glycine derivatives 1a − c and formaldehyde to C 60 in refluxing chlorobenzene for 5 h following Prato's procedure . These new 1,6-fullerenynes were obtained as stable brown solids in moderate (16−32%) yields (55−64% based on recovered fullerene).…”

mentioning

confidence: 99%