Bicyclization involving pseudo-intramolecular imination with diamines
نویسندگان
چکیده
منابع مشابه
Bicyclization involving pseudo-intramolecular imination with diamines.
α-Nitro-δ-keto nitriles and α-nitro-δ-keto ester were readily converted to diazabicyclo compounds having vicinal functionality upon treatment with diamines. The keto nitrile attracts the diamine nearby to an acidic hydrogen to cause the pseudo-intramolecular imination which proceeds efficiently without any catalyst at room temperature.
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For any positive integer n and fixed integer t ≥ 1, we define function Ut(n) = min{k : 1 t + 2 t + · · · + n t + k = m, n | m, k ∈ N + , t ∈ N + }, where n ∈ N + , m ∈ N + , which is a new pseudo Smarandache function. The main purpose of this paper is using the elementary method to study the properties of Ut(n), and obtain some interesting identities involving function Ut(n). In reference [1], ...
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ژورنال
عنوان ژورنال: Chemical Communications
سال: 2011
ISSN: 1359-7345,1364-548X
DOI: 10.1039/c1cc10705d