Lewis N. Mander
نویسندگان
چکیده
منابع مشابه
Frustrated Lewis pairs derived from N-heterocyclic carbenes and Lewis acids.
The chemistry of frustrated Lewis pairs derived from N-heterocyclic carbenes and a number of Lewis acids has been probed. The combination of 1,3-bis[2,6-(di-iso-propyl)phenyl]-1,3-imidazol-2-ylidene (IDipp) (1) with B(C6F5)3 was shown to give the classical Lewis acid-base adduct (IDipp)B(C6F5)3 (2) which was unreactive. In contrast, the combination 1,3-di-tert-butyl-1,3-imidazol-2-ylidene (3) w...
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The relative (to BEt3) hydride ion affinity (HIA) of a series of acridine borenium salts has been calculated, with some HIAs found to be similar to that for [Ph3C]+. The HIA at the acridine C9 position is controlled by both acridine and the boron substituents, the latter presumably affecting the strength of the B=N bond in the acridane-BY2 products from hydride transfer. Through a range of hydr...
متن کاملFrustrated N-heterocyclic carbene-silylium ion Lewis pairs.
The reaction of the N-heterocyclic carbene 1,3-di-tert-butyl-4,5-dimethylimidazolin-2-ylidene () with trimethylsilyl iodide, triflate and triflimidate [Me3SiX, X = I, CF3SO3 (OTf), (CF3SO2)2N (NTf2)] by mixing the neat, liquid starting materials afforded the corresponding 2-(trimethylsilyl)imidazolium salts [()SiMe3]X as highly reactive, white crystalline solids. Only the triflimidate (X = NTf2...
متن کاملContributions to the Natural History of the Com - Mander Islands
About forty years ago the Great Auk (Plautus impennis) of the Northern Atlantic became exterminated. -A vigorous search has been made for it and its remains; fabulous sums have been paid for skins and eggs; and monographers, among whom some of the most prominent ornithologists, have collected together the most minute facts bearing upon its history, and discussed in extreme detail the number of ...
متن کاملStereoselective Lewis acid mediated (3+2) cycloadditions of N-H- and N-sulfonylaziridines with heterocumulenes.
Alkyl and aryl isothiocyanates and carbodiimides are effective substrates in (3+2) cycloadditions with N-sulfonyl-2-substituted aziridines and 2-phenylaziridine for the synthesis of iminothiazolidines and iminoimidazolidines. Additionally, the stereoselective (3+2) cycloaddition of N-H- and N-sulfonylaziridines with isothiocyanates can be accomplished, allowing for the synthesis of highly enant...
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ژورنال
عنوان ژورنال: Australian Journal of Chemistry
سال: 2004
ISSN: 0004-9425
DOI: 10.1071/ch04134