Synthesis of dioxazaborocines from N-substituted-bis(2-hydroxyaryl)aminomethylamines
The preparation of a number of tripodal amines from aminoalkylation of 1,3-benzoxazines by phenols is presented. A series of ligands prepared in this manner were successfully coordinated to boron, giving dioxazaborocines. X-ray crystal structures of two analogues are reported. These compounds are capable of releasing borate ions and are therefore potentially biologically active.
Woodgate, Paul D.,Horner, Gillian M.,Maynard, N. Paul,Rickard, Clifton E.F.
p. 180 - 193
(2007/10/03)
Synthesis of Dihydrobenzofurans from Phenolic Mannich Bases and their Quaternized Derivatives
Reaction of dimethylsulphoxonium methylide with quaternized derivatives of phenolic Mannich bases, and in certain cases with the bases themselves, constitutes a useful synthesis of dihydrobenzofurans.On the other hand treatment of those same quaternized derivatives with diazomethane may be a useful alternative procedure for the preparation of coumarans with base-sensitive groups.
Blade-Font, Artur,Rocabayera, Teodoro de Mas
p. 841 - 848
(2007/10/02)
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