Phosphorus-containing macrocycles macrocyclic effect

Phosphorus-containing macrocycles, 990, 996, 998 macrocychc effect, 1002 ring size, 1003 stereochemistry, 1003 Phosphorus heterocycles transition metal complexes, 1041 Phosphorus ligands, 989-1061 ir-acid series, 1033 bonding, 1030-1041 cone angle concept, 1012 trigonal bipyramidal complexes, 1036 Phosphorus oxychloride metal complexes, 500 Phosphorus ylides transition metal complexes, 1056 Phosphorylation biological, 978 Phosvitin, 975 Photochromism... 

Clean desulfurization of thiophosphonic macrocycles 126(X = O, Y = S) and 127 gives rise selectively to new tricoordinated phosphorus containing macrocycles 126(X = O, Y = lone pair) and 128 (Scheme 12.50). That result is of special importance taking into the account numerous types of macrocycles containing telracoordinated thiophosphonic fragments obtained by effective cyclocondensation strategy [18, 19]. 

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