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The resulting iron–NHC complexes act as efficient catalysts for dehydrogenative silylation of alcohols with silanes. Iso-butyl and n-butyl wingtip variants show slightly improved activity, delivering quantitative silylether yields after 8 h at 70 °C in acetonitrile.",{"@graph":69,"@context":123},[70,84,106],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":40,"@type":76,"position":81},"https://docshare.wps.com/document/research-report/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/dehydrogenative-silylation-of-alcohols-catalysed-by-half-sandwich-iron-n-heterocyclic-carbene-complexes/181731/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/dehydrogenative-silylation-of-alcohols-catalysed-by-half-sandwich-iron-n-heterocyclic-carbene-complexes/181731.png","ImageObject",300,407,{"name":92,"@type":93},"Margaret","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-11-05","2026-09-02",true,{"@type":102,"interactionType":103,"userInteractionCount":105},"InteractionCounter",{"@type":104},"ViewAction",13,{"@type":107,"mainEntity":108},"FAQPage",[109,115,119],{"name":110,"@type":111,"acceptedAnswer":112},"How were the half-sandwich iron N-heterocyclic carbene complexes prepared?","Question",{"text":113,"@type":114},"They were prepared by direct reaction of Fe3(CO)12 with the corresponding imidazolium proligands bearing different wingtip groups.","Answer",{"name":116,"@type":111,"acceptedAnswer":117},"What reaction do these iron NHC complexes catalyze?",{"text":118,"@type":114},"They catalyze the dehydrogenative silylation of alcohols with silanes to form silylethers.",{"name":120,"@type":111,"acceptedAnswer":121},"Which catalyst variants show the best performance and under what conditions?",{"text":122,"@type":114},"Iso-butyl and n-butyl wingtip catalysts perform slightly better than the other variants, giving quantitative yields of silylethers in 8 h at 70 °C in acetonitrile.","https://schema.org",{"og:url":83,"og:type":125,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":127,"canonical":83},"index,follow",{"doc_id":129,"site_id":62},181731,1788345748,{"code":4,"msg":5,"data":132},{"doc_id":129,"user_id":133,"nickname":92,"user_avatar":134,"doc_module":4,"category_id":39,"category_name":40,"doc_title":65,"doc_description":67,"doc_content":135,"file_id":136,"file_url":137,"file_type":138,"file_size":139,"view_count":105,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":24,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":130,"read_time":105,"preview_page_count":4},137451207643,"https://ap-avatar.wpscdn.com/davatar_3d24733baf745e90a7e4bdd5f77d97b2","| Dehydrogenative silylation of alcohols catalysed by half-sandwich iron N-heterocyclic carbene complexes\u003Cbr>Jo~ao M.S. Cardoso, Rita Lopes, Beatriz Royo*\u003Cbr>Instituto de Tecnologia Química e Biolgica da, Universidade Nova de Lisboa, Av. da República, EAN, 2780-157 Oeiras, Portugal |  |  |\n| --- | --- | --- |\n| a r t i c l e i n f o |  | a b s t r a c t |\n| Article history:\u003Cbr>Received 3 March 2014\u003Cbr>Received in revised form\u003Cbr>30 May 2014\u003Cbr>Accepted 4 June 2014\u003Cbr>Available online xxx |  | A new series of tetramethylcyclopentadienyl-functionalised N-heterocyclic carbene complexes of iron bearing different wingtips of general type (Cp*-NHCR)Fe(CO)I (R ¼ nBu, iBu, Et, CH2CH2OMe, CH2Ph) were prepared by direct reaction of Fe3(CO)12 and the corresponding imidazolium proligands. These new ironNHC complexes have been found to be efficient catalysts for the dehydrogenative silylation of alcohols with silanes. Iron metal complexes bearing iso-butyl and n-butyl wingtips displayed slightly better catalytic performances than the related complexes (Cp*-NHCR)Fe(CO)I (R ¼ Et, CH2CH2OMe, CH2Ph), affording quantitative yields of the corresponding silylethers in 8 h at 70 􀀂 C in acetonitrile.\u003Cbr>© 2014 Elsevier B.V. All rights reserved. |\n| Keywords:\u003Cbr>Iron\u003Cbr>N-Heterocyclic carbene ligands Coupling of silanes with alcohols Silylethers |  |  |\n\n| Entry | Catalyst | Silane | Alcohol | Product | Time | Yieldb (%) |\n| --- | --- | --- | --- | --- | --- | --- |\n| 1 | 1 | PhSiH3 | EtOH | PhSi(OEt)3 | 8 | 99 (92) |\n| 2 | 2 | PhSiH3 | EtOH | PhSi(OEt)3 | 8 | 91 (87) |\n| 3 | 3 | PhSiH3 | EtOH | PhSi(OEt)3 | 12 | 99 (93) |\n| 4 | 4 | PhSiH3 | EtOH | PhSi(OEt)3 | 12 | 99 (91) |\n| 5 | 5 | PhSiH3 | EtOH | PhSi(OEt)3 | 16 | 95 (87) |\n| 6 | 6 | PhSiH3 | EtOH | PhSi(OEt)3 | 16 | 96 (87) |\n| 7 | 7 | PhSiH3 | EtOH | PhSi(OEt)3 | 16 | 84 (79) |\n| 8 | 1 | Ph2SiH2 | EtOH | Ph2Si(OEt)2 | 8 | 82 (77) |\n| 9 | 1 | (EtO)3SiH | EtOH | Si(OEt)4 | 8 | 98 (91) |\n| 10 | 1 | tBuPh2SiH | EtOH | tBuPh2Si(OEt) | 16 | 70 (58) |\n| 11 | 1 | PhMe2SiH | EtOH | e | 16 | 0 |\n| 12 | 1 | Ph3SiH | EtOH | e | 16 | 0 |\n| 13 | 1 | Et3SiH | EtOH | e | 16 | 0 |\n| 14 | 1 | tBu2SiH2 | EtOH | e | 16 | 0 |\n| 15 | 1 | PhSiH3 | iPrOH | PhSi(OiPr)3 | 8 | 66 (62) |\n| 16 | 1 | PhSiH3 | ButCH(Me)OH | PhSiH[OCH(Me)But]2 | 16 | 69 (60) |\n| 17 | 1 | PhSiH3 | PhCH(Me)OH | PhSiH[OCH(Me)Ph]2 | 16 | 71 (65) |","cbCaihwNWWe2tTqn","https://ap.wps.com/l/cbCaihwNWWe2tTqn","pdf",410517,"English","# Abstract\n## Catalyst preparation\n## Catalytic dehydrogenative silylation\n## Comparative catalytic performance","[{\"question\":\"How were the half-sandwich iron N-heterocyclic carbene complexes prepared?\",\"answer\":\"They were prepared by direct reaction of Fe3(CO)12 with the corresponding imidazolium proligands bearing different wingtip groups.\"},{\"question\":\"What reaction do these iron NHC complexes catalyze?\",\"answer\":\"They catalyze the dehydrogenative silylation of alcohols with silanes to form silylethers.\"},{\"question\":\"Which catalyst variants show the best performance and under what conditions?\",\"answer\":\"Iso-butyl and n-butyl wingtip catalysts perform slightly better than the other variants, giving quantitative yields of silylethers in 8 h at 70 °C in acetonitrile.\"}]","Dehydrogenative silylation of alcohols catalysed by half-sandwich iron N-heterocyclic carbene complexes | PDF"]