Synthesis of 1,4-Diazacycles by Hydrogen Borrowing.
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DOI: 10.1021/acs.orglett.3c00468
Abstract: We report the syntheses of 1,4-diazacycles by diol-diamine coupling, uniquely made possible with a (pyridyl)phosphine-ligated ruthenium(II) catalyst (1). The reactions can exploit either two sequential N-alkylations or an intermediate tautomerization pathway to yield piperazines and… read more here.
Keywords: synthesis diazacycles; diazacycles hydrogen; hydrogen borrowing;