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The X\u2010ray crystal structure of the parent 2\u2010phosphaphenol complex shows that the hydroxy substituent is coplanar with the ring and that the conjugation between the \u03c0 lone pair of electrons on the oxygen atom and the ring leads to lengthening of the P\uf8ffC(OH) bond. This complex is methylated at the phosphorus atom by methyl iodide with disruption of the ring aromaticity. The complex is further silylated, acylated, and triflated at the oxygen atom with retention of the aromatic structure, and decomplexation by 1,2\u2010bis(diphenylphosphino)propane (DPPE) leads to the free parent 2\u2010phosphaphenol. The comparison of the X\u2010ray crystallographic structural analysis of the 2\u2010bromophosphinine complex with an earlier structure of the analogous 2\u2010chlorophosphinine complex suggests that 2\u2010bromo species is a better ligand than 2\u2010chlorophosphinine. When the [4+2] adducts are treated with BBr<jats:sub>3<\/jats:sub> and water, a 2\u2010hydroxy\u20103\u2010bromo\u20101,2,3,6\u2010tetrahydrophosphinine derivative is obtained, which yields a seven\u2010membered 2,1\u2010phosphaoxepin when treated with an amine.<\/jats:p>","DOI":"10.1002\/chem.201100834","type":"journal-article","created":{"date-parts":[[2011,8,11]],"date-time":"2011-08-11T11:05:31Z","timestamp":1313060731000},"page":"10745-10751","source":"Crossref","is-referenced-by-count":42,"title":["The Conversion of Furans into Phosphinines"],"prefix":"10.1002","volume":"17","author":[{"given":"Yanli","family":"Mao","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fran\u00e7ois","family":"Mathey","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2011,8,11]]},"reference":[{"key":"e_1_2_5_1_2","doi-asserted-by":"publisher","DOI":"10.1021\/cr990321x"},{"key":"e_1_2_5_2_2","doi-asserted-by":"publisher","DOI":"10.1039\/CC9960002071"},{"key":"e_1_2_5_2_3","doi-asserted-by":"publisher","DOI":"10.1016\/S1381-1169(98)00377-X"},{"key":"e_1_2_5_2_4","doi-asserted-by":"publisher","DOI":"10.1039\/a705249i"},{"key":"e_1_2_5_2_5","doi-asserted-by":"publisher","DOI":"10.1002\/1521-3765(20010716)7:14<3106::AID-CHEM3106>3.0.CO;2-Y"},{"key":"e_1_2_5_2_6","doi-asserted-by":"publisher","DOI":"10.1002\/1521-3773(20020215)41:4<563::AID-ANIE563>3.0.CO;2-Q"},{"key":"e_1_2_5_2_7","doi-asserted-by":"publisher","DOI":"10.1002\/ange.200462613"},{"key":"e_1_2_5_2_8","doi-asserted-by":"publisher","DOI":"10.1002\/anie.200462613"},{"key":"e_1_2_5_2_9","doi-asserted-by":"publisher","DOI":"10.1016\/j.tetlet.2006.01.049"},{"key":"e_1_2_5_2_10","doi-asserted-by":"publisher","DOI":"10.1021\/om950800w"},{"key":"e_1_2_5_3_2","first-page":"1097","volume":"15","author":"Mathey F.","year":"2005","journal-title":"Sci. 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