{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,5]],"date-time":"2026-04-05T06:53:58Z","timestamp":1775372038853,"version":"3.50.1"},"reference-count":20,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2009,4,6]],"date-time":"2009-04-06T00:00:00Z","timestamp":1238976000000},"content-version":"vor","delay-in-days":8741,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Heterocyclic Chem"],"published-print":{"date-parts":[[1985,5]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p><jats:italic>meso<\/jats:italic>\u2010Tetraalkylporphyrinogens are easily formed and unexpectedely stable compounds. Only through forced oxidation can they efficiently be converted into porphyrins. <jats:italic>meso<\/jats:italic>\u2010Tetraphenylphlorin was trapped as an intermediate in the Rothemund <jats:italic>meso<\/jats:italic>\u2010tetraphenylporphyrin synthesis.<\/jats:p>","DOI":"10.1002\/jhet.5570220363","type":"journal-article","created":{"date-parts":[[2009,4,6]],"date-time":"2009-04-06T19:46:21Z","timestamp":1239047181000},"page":"931-933","source":"Crossref","is-referenced-by-count":46,"title":["A new look into the rothemund <i>meso<\/i>\u2010tetraalkyl and tetraarylporphyrin synthesis"],"prefix":"10.1002","volume":"22","author":[{"given":"A. M. D'A. Rocha","family":"Gonsalves","sequence":"first","affiliation":[]},{"given":"Mariette M.","family":"Pereira","sequence":"additional","affiliation":[]}],"member":"311","published-online":{"date-parts":[[2009,4,6]]},"reference":[{"key":"e_1_2_1_2_2","doi-asserted-by":"publisher","DOI":"10.1021\/jo01288a053"},{"key":"e_1_2_1_2_3","doi-asserted-by":"publisher","DOI":"10.1002\/jlac.19687180118"},{"key":"e_1_2_1_2_4","unstructured":"[c]B.von Maltzan German Patent 24 13 414.3 18 March1974."},{"key":"e_1_2_1_2_5","first-page":"17450","volume":"84","year":"1976","journal-title":"Chem. Abstr."},{"key":"e_1_2_1_2_6","doi-asserted-by":"publisher","DOI":"10.1021\/ja00542a034"},{"key":"e_1_2_1_2_7","doi-asserted-by":"publisher","DOI":"10.1002\/jhet.5570190239"},{"key":"e_1_2_1_3_2","doi-asserted-by":"publisher","DOI":"10.1002\/anie.197504241"},{"key":"e_1_2_1_3_3","doi-asserted-by":"publisher","DOI":"10.1002\/anie.198203431"},{"key":"e_1_2_1_4_2","doi-asserted-by":"publisher","DOI":"10.1002\/anie.198207851"},{"key":"e_1_2_1_5_2","doi-asserted-by":"publisher","DOI":"10.1002\/jhet.5570070205"},{"key":"e_1_2_1_6_2","doi-asserted-by":"crossref","unstructured":"B.Evans K. M.SmithandJ. H.Fuhrhop Tetrahedron Letters 443(1977).","DOI":"10.1016\/S0040-4039(01)92661-9"},{"key":"e_1_2_1_7_2","doi-asserted-by":"publisher","DOI":"10.1021\/ja00766a056"},{"key":"e_1_2_1_8_2","unstructured":"Electrophilic attack at the \u03b2\u2010positions and formation of noncyclic oligomers were considered responsible for the failure of this method to yield porphyrins (check ref 2)."},{"key":"e_1_2_1_9_2","unstructured":"Chloroform can be used instead."},{"key":"e_1_2_1_10_2","unstructured":"It is known that the chlorinated solvents do not favour the oxidation step (check ref 4)."},{"key":"e_1_2_1_11_2","unstructured":"Both dicyanodichloroquinone andp\u2010chloranil proved to be efficient."},{"key":"e_1_2_1_12_2","unstructured":"This is a new compound which contrary to othermeso\u2010tetraalkyl\u2010porphyrins shows anetio\u2010type visible spectrum."},{"key":"e_1_2_1_13_2","doi-asserted-by":"crossref","unstructured":"I.Tabushi K.SakaiandK.Yamamura Tetrahedron Letters 1821(1978).","DOI":"10.1016\/S0040-4039(01)94680-5"},{"key":"e_1_2_1_14_2","unstructured":"The compound is stable enough to stand isolation by column chromatography but could not be purified for full characterization. However its visible (\u03bb max 423 and 630 nm) and nmr (\u03b2\u2010H 7 2 \u03b4 (s broad base) Ph\u2010H 7 65 \u03b4 (m)) spectroscopic characteristics fit to the assigned structure."},{"key":"e_1_2_1_15_2","doi-asserted-by":"publisher","DOI":"10.1002\/jhet.5570050513"}],"container-title":["Journal of Heterocyclic Chemistry"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2Fjhet.5570220363","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/jhet.5570220363","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,10,21]],"date-time":"2023-10-21T21:32:07Z","timestamp":1697923927000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/jhet.5570220363"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1985,5]]},"references-count":20,"journal-issue":{"issue":"3","published-print":{"date-parts":[[1985,5]]}},"alternative-id":["10.1002\/jhet.5570220363"],"URL":"https:\/\/doi.org\/10.1002\/jhet.5570220363","archive":["Portico"],"relation":{},"ISSN":["0022-152X","1943-5193"],"issn-type":[{"value":"0022-152X","type":"print"},{"value":"1943-5193","type":"electronic"}],"subject":[],"published":{"date-parts":[[1985,5]]}}}