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The compounds in the reaction mixture could be easily separated into <jats:bold>1\u2009a<\/jats:bold> and a mixture of <jats:bold>1\u2009b<\/jats:bold>, <jats:bold>1\u2009c<\/jats:bold>, and <jats:bold>1\u2009d<\/jats:bold> by the treatment with chloroform. Compounds <jats:bold>1\u2009b<\/jats:bold>, <jats:bold>1\u2009c<\/jats:bold>, and <jats:bold>1\u2009d<\/jats:bold> were further separated and isolated, and each structure was identified. The experimental results indicated that the most plausible mechanism is a substitution reaction at the silicon center via a pentacoordinate intermediate without a cyclic siloxane bond cleavage reaction. The obtained isomer <jats:bold>1\u2009a<\/jats:bold> or <jats:bold>1\u2009b<\/jats:bold> further reacted with dichlorodiphenylsilane in the presence of triethylamine to give <jats:italic>syn<\/jats:italic>\u2010type laddersiloxane (<jats:bold>2\u2009a<\/jats:bold>) or <jats:italic>anti<\/jats:italic>\u2010type laddersiloxane (<jats:bold>2\u2009b<\/jats:bold>), respectively.<\/jats:p>","DOI":"10.1002\/asia.201700125","type":"journal-article","created":{"date-parts":[[2017,2,22]],"date-time":"2017-02-22T04:22:50Z","timestamp":1487737370000},"page":"1224-1233","source":"Crossref","is-referenced-by-count":10,"title":["Stereoisomerization of Cyclic Silanols"],"prefix":"10.1002","volume":"12","author":[{"given":"Hisayuki","family":"Endo","sequence":"first","affiliation":[{"name":"Department of Chemistry and Chemical Biology Faculty of Science and Technology Gunma University  1-5-1 Tenjin-cho Kiryu 376-8515 Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nobuhiro","family":"Takeda","sequence":"additional","affiliation":[{"name":"Department of Chemistry and Chemical Biology Faculty of Science and Technology Gunma University  1-5-1 Tenjin-cho Kiryu 376-8515 Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2158-1644","authenticated-orcid":false,"given":"Masafumi","family":"Unno","sequence":"additional","affiliation":[{"name":"Department of Chemistry and Chemical Biology Faculty of Science and Technology Gunma University  1-5-1 Tenjin-cho Kiryu 376-8515 Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2017,3,30]]},"reference":[{"key":"e_1_2_6_1_1","doi-asserted-by":"publisher","DOI":"10.1070\/RC2013v082n04ABEH004360"},{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.1002\/aoc.1607"},{"key":"e_1_2_6_3_1","unstructured":"\u00a0"},{"key":"e_1_2_6_4_2","doi-asserted-by":"publisher","DOI":"10.1246\/bcsj.73.215"},{"key":"e_1_2_6_5_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jorganchem.2010.01.013"},{"key":"e_1_2_6_6_1","unstructured":"\u00a0"},{"key":"e_1_2_6_7_2","doi-asserted-by":"publisher","DOI":"10.1007\/s11172-005-0059-0"},{"key":"e_1_2_6_8_2","doi-asserted-by":"publisher","DOI":"10.1021\/om301158w"},{"key":"e_1_2_6_9_2","doi-asserted-by":"publisher","DOI":"10.1002\/chem.200901307"},{"key":"e_1_2_6_10_1","unstructured":"\u00a0"},{"key":"e_1_2_6_11_2","doi-asserted-by":"publisher","DOI":"10.1021\/ja00947a017"},{"key":"e_1_2_6_12_2","doi-asserted-by":"publisher","DOI":"10.1021\/ja00947a016"},{"key":"e_1_2_6_13_2","doi-asserted-by":"publisher","DOI":"10.1080\/10241229712331341254"},{"key":"e_1_2_6_14_2","doi-asserted-by":"publisher","DOI":"10.1007\/s12633-014-9239-6"},{"key":"e_1_2_6_15_2","doi-asserted-by":"publisher","DOI":"10.1021\/ic020546h"},{"key":"e_1_2_6_16_2","doi-asserted-by":"publisher","DOI":"10.1021\/ic9017079"},{"key":"e_1_2_6_17_2","doi-asserted-by":"publisher","DOI":"10.1021\/ja043894m"},{"key":"e_1_2_6_18_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.eurpolymj.2012.03.008"},{"key":"e_1_2_6_19_2","first-page":"1371","volume":"259","author":"Klement\u2032ev I. 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