{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,31]],"date-time":"2026-07-31T08:57:21Z","timestamp":1785488241764,"version":"3.56.0"},"reference-count":41,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2026,1,23]],"date-time":"2026-01-23T00:00:00Z","timestamp":1769126400000},"content-version":"vor","delay-in-days":22,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,1,1]],"date-time":"2026-01-01T00:00:00Z","timestamp":1767225600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Chemistry &amp;amp; Biodiversity"],"published-print":{"date-parts":[[2026,1]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>The manuscript describes the explorations on [4+2] cycloaddition of newly in situ generated 3\u2010(allyl\/propargyl\u2010thio)propanone as 2\u03c0\u2010components with functionalized 1,3\u2010diazabuta\u20101,3\u2010dienes as 4\u03c0\u2010components for the synthesis of 5\u2010allyl\/propargyl\u2010thio methyl pyrimidinones. The synthetic methodology is simple to operate, mild, and successful with a wide range of functionalized 1,3\u2010diazabuta\u20101,3\u2010dienes in the development of functionalized pyrimidinones. The synthesis of these functionalized pyrimidinones is significant as functionalized pyrimidinones have diverse pharmacological relevance and are useful synthons for the synthesis of condensed heterocycles.<\/jats:p>","DOI":"10.1002\/cbdv.202503144","type":"journal-article","created":{"date-parts":[[2026,1,23]],"date-time":"2026-01-23T18:02:18Z","timestamp":1769191338000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Generation of a 3\u2010Allyl\/Propanylthiomethyl Ketene and their [4+2] Cycloadditions With 1,3\u2010Diazabuta\u20101,3\u2010dienes: Synthesis of 5\u2010Allyl\/propargyl\u2010thio methyl Pyrimidinones"],"prefix":"10.1002","volume":"23","author":[{"given":"Rayees Ahmad","family":"Naikoo","sequence":"first","affiliation":[{"name":"Department of Chemistry I. K. 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