Construction of the Complete Aromatic Core of Diazonamide A by a Novel Hetero Pinacol Macrocyclization Cascade Reaction

Structurally Divergent Lithium Catalyzed Friedel–Crafts Reactions on Oxetan‐3‐ols: Synthesis of 3,3‐Diaryloxetanes and 2,3‐Dihydrobenzofurans

“…The intramolecular ring opening of oxetane products to generate other heterocycles has received interest in recent years, including the formation of certain dihydrobenzofuran derivatives . Herein little studied 3‐aryl‐3‐hydroxymethyl‐dihydrobenzofurans are prepared in a short sequence, whereby oxetan‐3‐one functions as a ‘triple electrophile’ over 2 steps.…”

Room temperature activation of aryloxysulfonyl azides by [Co(II)(TPP)] for selective radical aziridination of alkenes via metalloradical catalysis

“…The commercial availability of [Co(TPP)] should further enhance the practicality of this room-temperature aziridination method. The resulting N -aryloxysulfonyl aziridines, which can be readily converted to unprotected N–H aziridine derivatives through facile removal of the aryloxysulfonyl groups, 12 may find applications for the synthesis of nitrogen-containing compounds of pharmaceutical importance. 12b–c,13 More broadly, the demonstrated high reactivity of aryloxysulfonyl azides may stimulate the exploration of their applications for the development of other Co(II)-based metalloradical processes where the α-Co(III)-aminyl radicals serve as the key intermediates (Scheme 1).…”

Twenty five years of organic chemistry with diiodosamarium

“…For example, Mukaiyama et al constructed in 1997 the B ring of taxol by an intramolecular samarium-Reformatsky type [56]. Recently, Nicolaou et al took advantage of an intramolecular aldehyde-oxime coupling to prepare one of the rings of diazonamide A [57]. Because lack of place, it is impossible to develop more this topic, some additional references can be found in ref.…”