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外文期刊>Organometallics
>Synthesis and structure of stable alpha 1-boranyldiazomethanes: 1,3-di-tert-butyl-2,3-dihydro-1H-1,3,2-diazaborolyl-(trimethylsilyl)diazom ethane and 1,3-diethyl-2,3-dihydro-1H-1,3,2-benzodiazaborolyl-(trimethylsilyl)diazome thane
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Synthesis and structure of stable alpha 1-boranyldiazomethanes: 1,3-di-tert-butyl-2,3-dihydro-1H-1,3,2-diazaborolyl-(trimethylsilyl)diazom ethane and 1,3-diethyl-2,3-dihydro-1H-1,3,2-benzodiazaborolyl-(trimethylsilyl)diazome thane
Reaction of equimolar amounts Of Me3SiC(N-2)Li with the 2-bromo-2,3-dihydro-1H-1,3,2-diaza-borolederivatives tBuNCH=CHN(tBu)BBr (1), EtN-C(CH=CH-CH=CH)CN(Et)BBr (3), and tBuNCH=C(CH=CH-CH=CH)N-B-Br (5) afforded the 1,3,2-diazaborolyldiazomethanes tBuNCH=CHN(tBu)B-C(N-2)SiMe3 (2), EtN-C(CH=CH-CH=CH)C-AT(Et)B-C(N-2)SiMe3 (4), and tBuNCH=C(CH=CH-CH=CH)N-B-C(N-2)SiMe3 (6). The X-ray structure analysis of 2 revealed a planar five-membered heterocycle which is linked to the carbon atom of the diazomethyl unit via a B-C single bond. pi -Interactions between this carbon atom and the boron atom can thus be excluded. [References: 36]
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