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- W2322558097 abstract "Reactions of N-monosubstituted amidines of the formula HN═C(R)–NH(R′) (R = Ph, 4-tert-butylphenyl, Me; R′ = 2,6-diisopropylphenyl, Ph) with AlMe3 and AlMeCl2 are reported. All the N-(Dipp)amidines (Dipp = 2,6-diisopropylphenyl) react with AlMe3 in a 1:1 ratio to yield tetrameric aluminum amidinates (1, 2, and 3) in good yields. In these compounds, the amidinate ligand chelates to Al while bridging to another Al. However, when N-phenylamidines are employed, tetracyclic (4–9) and pentacyclic (10) Al–N–C heterocycles are formed. In the case of N-phenylbenzamidine, formation of a hexacyclic Al–N–C heterocycle (11) is observed when a slight excess of AlMe3 (1:1.2 equiv) is used. In these compounds, the amidinate ligand coordinates to Al atoms in a bridging fashion. Further, N-(Dipp)acetamidine and N-(Dipp)benzamidine are also treated with AlMeCl2. Whereas N-(Dipp)acetamidine affords an ionic 15-membered aluminum amidinate chain (12), N-(Dipp)benzamidine gives a bicyclic heterocycle (13) and the AlCl3 adduct of N-(Dipp)benzamidine (14). However, from a reaction between N-phenylbenzamidine and AlMeCl2, only the AlCl3 adduct, 15, was isolated. Compounds 3, 4, 6, 8, and 10–15 have been structurally characterized." @default.
- W2322558097 created "2016-06-24" @default.
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- W2322558097 date "2011-12-21" @default.
- W2322558097 modified "2023-10-17" @default.
- W2322558097 title "Reactions of N-Monosubstituted Amidines with AlMe<sub>3</sub> and AlMeCl<sub>2</sub>: Formation of Fused Triazaalane Heterocycles" @default.
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- W2322558097 doi "https://doi.org/10.1021/om2007375" @default.
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