{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,22]],"date-time":"2026-06-22T21:48:54Z","timestamp":1782164934332,"version":"3.54.5"},"reference-count":33,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2010,12,1]],"date-time":"2010-12-01T00:00:00Z","timestamp":1291161600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Chemistry A European J"],"published-print":{"date-parts":[[2011,1,24]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>The Sn\u2013W mixed oxide prepared by calcination of the Sn\u2013W mixed hydroxide precursor with a Sn\/W molar ratio of 2:1 at 800\u2009\u00b0C (SnW2\u2010800) acts as an efficient heterogeneous catalyst for the hydration of alkynes. Structurally diverse terminal and internal alkynes, including aromatic, aliphatic, and double\u2010bond\u2010containing ones, can be converted into the corresponding ketones in moderate to high yields. The catalytic activity of SnW2\u2010800 is much higher than those of previously reported heterogeneous catalysts and commonly utilized acid catalysts. The observed catalysis was truly heterogeneous, and the retrieved catalyst can be reused at least three times with retention of its high catalytic performance. The reaction rate for the SnW2\u2010800\u2010catalyzed hydration was decreased by addition of 2,6\u2010lutidine and the hydration hardly proceeded in the presence of an equimolar amount of this compound with respect to that of the Br\u00f8nsted acid sites in SnW2\u2010800. Therefore, the present hydration is mainly promoted by the Br\u00f8nsted acid sites in SnW2\u2010800.<\/jats:p>","DOI":"10.1002\/chem.201002761","type":"journal-article","created":{"date-parts":[[2010,12,1]],"date-time":"2010-12-01T16:58:30Z","timestamp":1291222710000},"page":"1261-1267","source":"Crossref","is-referenced-by-count":64,"title":["Heterogeneously Catalyzed Efficient Hydration of Alkynes to Ketones by Tin\u2013Tungsten Mixed Oxides"],"prefix":"10.1002","volume":"17","author":[{"given":"Xiongjie","family":"Jin","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Takamichi","family":"Oishi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kazuya","family":"Yamaguchi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Noritaka","family":"Mizuno","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2010,12]]},"reference":[{"key":"e_1_2_6_1_2","unstructured":"\u00a0"},{"key":"e_1_2_6_2_2","doi-asserted-by":"publisher","DOI":"10.1055\/s-2007-966002"},{"key":"e_1_2_6_3_2","doi-asserted-by":"publisher","DOI":"10.1021\/cr0201068"},{"key":"e_1_2_6_4_2","unstructured":"To date various transition\u2010metal salts and complexes have been reported to be active for the hydration of alkynes.[1]Several gold complexes have shown very high catalytic activities:"},{"key":"e_1_2_6_5_2","doi-asserted-by":"publisher","DOI":"10.1021\/ja809403e"},{"key":"e_1_2_6_6_2","doi-asserted-by":"publisher","DOI":"10.1021\/jo802558e"},{"key":"e_1_2_6_7_2","doi-asserted-by":"publisher","DOI":"10.1002\/1521-3757(20021202)114:23<4745::AID-ANGE4745>3.0.CO;2-S"},{"key":"e_1_2_6_7_3","doi-asserted-by":"publisher","DOI":"10.1002\/1521-3773(20021202)41:23<4563::AID-ANIE4563>3.0.CO;2-U"},{"key":"e_1_2_6_8_2","unstructured":"\u00a0"},{"key":"e_1_2_6_9_2","doi-asserted-by":"publisher","DOI":"10.1093\/oso\/9780198506980.001.0001"},{"key":"e_1_2_6_10_2","doi-asserted-by":"publisher","DOI":"10.1039\/b000153h"},{"key":"e_1_2_6_11_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0920-5861(99)00222-9"},{"key":"e_1_2_6_12_2","volume-title":"Fine Chemicals Through Heterogeneous Catalysis","author":"Sheldon R. 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A.","year":"1990"},{"key":"e_1_2_6_27_2","first-page":"3755","author":"Rahman M. A.","year":"2008","journal-title":"Synthesis"},{"key":"e_1_2_6_28_2","unstructured":"The catalytic activity of Sn\u2013W mixed oxides was much higher than those of pure Br\u00f8nsted acid catalysts such as a heteropoly acid and sulfuric acid (Table\u20053). A possible explanation for the higher catalytic activity of Sn\u2013W mixed oxides is that the Lewis acidic sites also promote the hydration likely through the activation of water to form a more nucleophilic hydroxo species."},{"key":"e_1_2_6_29_2","doi-asserted-by":"publisher","DOI":"10.1006\/jcat.1993.1145"},{"key":"e_1_2_6_30_2","volume-title":"Purification of Laboratory Chemicals","year":"1988"},{"key":"e_1_2_6_31_2","doi-asserted-by":"publisher","DOI":"10.1002\/ange.200605004"},{"key":"e_1_2_6_31_3","doi-asserted-by":"publisher","DOI":"10.1002\/anie.200605004"}],"container-title":["Chemistry \u2013 A European Journal"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2Fchem.201002761","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/chemistry-europe.onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/chem.201002761","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T22:10:15Z","timestamp":1760307015000},"score":1,"resource":{"primary":{"URL":"https:\/\/chemistry-europe.onlinelibrary.wiley.com\/doi\/10.1002\/chem.201002761"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2010,12]]},"references-count":33,"journal-issue":{"issue":"4","published-print":{"date-parts":[[2011,1,24]]}},"alternative-id":["10.1002\/chem.201002761"],"URL":"https:\/\/doi.org\/10.1002\/chem.201002761","archive":["Portico"],"relation":{},"ISSN":["0947-6539","1521-3765"],"issn-type":[{"value":"0947-6539","type":"print"},{"value":"1521-3765","type":"electronic"}],"subject":[],"published":{"date-parts":[[2010,12]]}}}