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The catalyst is effective across a broad range of substrates bearing both electron\u2010donating and electron\u2010withdrawing groups, indicating its robust functional group tolerance. Mechanistic investigations, supported by both experimental studies and computational analyses, suggest the initial step involves the reaction of BICAAC (\n                    <jats:bold>I<\/jats:bold>\n                    ) with pinacolborane (HBpin), leading to the formation of boron\u2013carbene complex (active catalyst\n                    <jats:bold>II<\/jats:bold>\n                    ). This active species facilitates substrate activation. A subsequent hydride transfer from an additional equivalent of HBpin to the activated substrate completes the reduction process. This stepwise mechanism underscores the dual role of HBpin as both a catalyst activator and a hydride donor. The interaction between BICAAC and HBpin is pivotal, as it modulates the electronic environment of the boron center to promote efficient hydride delivery.\n                  <\/jats:p>","DOI":"10.1002\/chem.202501880","type":"journal-article","created":{"date-parts":[[2025,7,3]],"date-time":"2025-07-03T05:10:31Z","timestamp":1751519431000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Expanding the Scope of BICAAC Organocatalyst: Hydroboration of Carbonyl and Alkyne Substrates"],"prefix":"10.1002","volume":"31","author":[{"ORCID":"https:\/\/orcid.org\/0009-0003-7021-3554","authenticated-orcid":false,"given":"Alisha","family":"Sharma","sequence":"first","affiliation":[{"name":"Department of Chemical Sciences Indian Institute of Science Education and Research Mohali  Knowledge City, Sector 81, SAS Nagar Mohali Punjab 140306 India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0006-1618-3114","authenticated-orcid":false,"given":"Surbhi","family":"Bansal","sequence":"additional","affiliation":[{"name":"Department of Chemical Sciences Indian Institute of Science Education and Research Mohali  Knowledge City, Sector 81, SAS Nagar Mohali Punjab 140306 India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8199-4876","authenticated-orcid":false,"given":"Archana","family":"Velloth","sequence":"additional","affiliation":[{"name":"Department of Chemical Sciences Indian Institute of Science Education and Research Mohali  Knowledge City, Sector 81, SAS Nagar Mohali Punjab 140306 India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6465-3655","authenticated-orcid":false,"given":"Sugumar","family":"Venkataramani","sequence":"additional","affiliation":[{"name":"Department of Chemical Sciences Indian Institute of Science Education and Research Mohali  Knowledge City, Sector 81, SAS Nagar Mohali Punjab 140306 India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0806-3105","authenticated-orcid":false,"given":"Sanjay","family":"Singh","sequence":"additional","affiliation":[{"name":"Department of Chemical Sciences Indian Institute of Science Education and Research Mohali  Knowledge City, Sector 81, SAS Nagar Mohali Punjab 140306 India"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2025,7,21]]},"reference":[{"key":"e_1_2_6_1_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0898-8838(04)56005-1"},{"key":"e_1_2_6_2_1","volume-title":"The Organometallic Chemistry of the Transition Metals","author":"Crabtree R. 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