| http://www.w3.org/ns/prov#value | - Michael Addition Receptors generally used in the Method A process may include, for example, ??,??-ethylenic acids or ??,??-thioacids such as those containing a --C???C--COOH, --C???C--C(O)SH, --C???C--C(S)SH, or a --C???C--C(S)OH moiety; ??,??-ethylenic esters or thioesters where the alkyl moiety is other than methyl or ethyl, for example, those which contain a --C???C--COOR, --C???C--C(S)OR, --C?
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