02091nas a2200241   4500008004100000022001400041245010400055210006900159260000900228490000700237520124700244653001701491653003501508653002901543653003301572653001801605100001701623700001701640700001901657700002401676700002401700856012501724       2023                        eng d  a0947-653900aIron-catalyzed alkoxylation, dehydrogenative-polymerization and tandem hydrosilylative-alkoxylation0 aIroncatalyzed alkoxylation dehydrogenativepolymerization and tan  cAUG 0 v293 a<p>Alkoxylation, hydrosilylative-alkoxylation, and dehydrogenative-polymerization are some of the most widely used transformations in synthetic chemistry. However, these transformations are traditionally catalyzed by precious, and rare late-transition metals. Presented here is a molecularly defined iron complex that catalyzes alkoxylation, tandem hydrosilylative-alkoxylation, and dehydrogenative polymerization of silanes under mild conditions. The iron complex [Fe(CO)(4)(H)(SiPh3)] 1 catalyzes a direct Si-O coupling reaction between an array of silanes and alcohols to produce desired alkoxysilanes in excellent yield, with H-2 as the only byproduct. The iron catalyst tolerates various functional groups and provides access to 20 alkoxysilanes, including essential molecules such as &amp; beta;-citronellol and cholesterol. Further, complex 1 catalyzes the polymerization of renewable diol and silane monomer to produce a renewable and degradable poly(isosorbide-silyl ether). Remarkably, complex 1 catalyzes a tandem hydrosilylative-alkoxylation of alkynes under mild conditions to yield unsaturated silyl ethers. The synthetic utility has been demonstrated by gram-scale alkoxylation and hydrosilylative-alkoxylation reactions.</p>
10aalkoxylation10adehydrogenative polymerization10aearth abundant catalysts10ahydrosilylative-alkoxylation10aIron Catalyst1 aSen, Anirban1 aKumar, Rohit1 aTewari, Tanuja1 aGonnade, Rajesh, G.1 aChikkali, Samir, H.  uhttps://library.ncl.res.in/content/iron-catalyzed-alkoxylation-dehydrogenative-polymerization-and-tandem-hydrosilylative