@article {843,
	title = {Nucleophilic additions of lactam-derived enol triflates to aldehydes mediated by nickel(II) and chromium(II) salts},
	journal = {Canadian Journal of Chemistry-Revue Canadienne De Chimie},
	volume = {82},
	number = {2},
	year = {2004},
	note = {ISI Document Delivery No.: 802BHTimes Cited: 5Cited Reference Count: 39},
	month = {Feb},
	pages = {139-144},
	type = {Article},
	abstract = {Enol trifluoromethanesulfonates (triflates) derived from N-protected lactams undergo nickel(II)-chloride- and chromium(II)-chloride-promoted carbonyl additions to aldehydes. The yields of this process range from 42\%-84\%.},
	keywords = {BOND FORMATIONS, BREVETOXIN-B, carbonyl addition, CATALYSIS, chromium(II) chloride, CONSTRUCTION, CYCLIZATION, DERIVATIVES, DYNEMICIN-A, ENANTIOSELECTIVE, lactam-derived enol triflate, LEPADIN B, NI(II)/CR(II)-MEDIATED COUPLING REACTION, nickel(II) chloride, TOTAL-SYNTHESIS},
	isbn = {0008-4042},
	url = {<Go to ISI>://000220138500010},
	author = {Easton, L. P. and Dake, G. R.}
}
@article {830,
	title = {Synthesis of functionalized 1-azaspirocyclic cyclopentanones using Bronsted acid or N-bromosuccinimide promoted ring expansions},
	journal = {Journal of Organic Chemistry},
	volume = {69},
	number = {17},
	year = {2004},
	note = {ISI Document Delivery No.: 845XHTimes Cited: 19Cited Reference Count: 128},
	month = {Aug},
	pages = {5668-5675},
	type = {Review},
	abstract = {Azaspirocyclic ring systems are present in a variety of alkaloids. Functionalized 1-azaspirocyclopentanones (6, 7, 11, 12) can be efficiently constructed through semipinacol ring expansion reactions of 2-(1-hydroxycyclobutyl)-p-toluenesulfonylenamides (4) promoted by either a Bronsted acid ((S)-(+)-10-camphorsulfonic acid or HCI) or N-bromosuccinimide, an electrophilic bromine source. Reactions promoted by N-bromosuccinimide tend to proceed in higher yields (80-95\%) and with greater diastereoselectivity (3:1-1:0) compared to those reactions promoted by a Bronsted acid. In addition, N-bromosuccinimide promoted reactions can produce a complementary stereochemical outcome compared to the reactions using Bronsted acid.},
	keywords = {1ST TOTAL-SYNTHESIS, ALPHA-HYDROXY IMINES, AMINO KETONE REARRANGEMENTS, CROSS-COUPLING, DIELS-ALDER REACTION, ENANTIOSELECTIVE, INITIATED PINACOL REARRANGEMENT, MARINE ALKALOIDS, PINNAIC ACID, REACTIONS, THERMAL REARRANGEMENT, TOTAL-SYNTHESIS},
	isbn = {0022-3263},
	url = {<Go to ISI>://000223278200020},
	author = {Dake, G. R. and Fenster, M. D. B. and Hurley, P. B. and Patrick, B. O.}
}
