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The reactions of these 3-methylene-2(3H)-imidazo[1,2-a]pyridinones with some ethyl cyano- or acyl-substituted acetates in the presence of a base did not afford the initially expected 2H-pyrano[2\u0027,3\u0027:4,5]imidazo[1,2-a]pyridine-2-one derivatives, but, instead of them, provided ethyl 3[2-hydroxyimidazo[1,2-a]pyridin-3-yl]acrylates. The thermolyses of these acrylates without any solvent under reduced pressure gave the corresponding 2H-pyrano[2\u0027,3\u0027:4,5]imidazo[1,2-a]pyridine-2-one derivatives.", "subitem_description_type": "Abstract"}]}, "item_6_description_30": {"attribute_name": "\u8cc7\u6e90\u30bf\u30a4\u30d7\uff08\u30b3\u30f3\u30c6\u30f3\u30c4\u306e\u7a2e\u985e\uff09", "attribute_value_mlt": [{"subitem_description": "Article", "subitem_description_type": "Other"}]}, "item_6_description_31": {"attribute_name": "\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\uff1amime\u30bf\u30a4\u30d7", "attribute_value_mlt": [{"subitem_description": "application/pdf", "subitem_description_type": "Other"}]}, "item_6_description_5": {"attribute_name": "\u5f15\u7528", "attribute_value_mlt": [{"subitem_description": "HETEROCYCLES. 80(1):439-454 (2010)", "subitem_description_type": "Other"}]}, "item_6_link_3": {"attribute_name": "\u4fe1\u5dde\u5927\u5b66\u7814\u7a76\u8005\u7dcf\u89a7\u3078\u306e\u30ea\u30f3\u30af", "attribute_value_mlt": [{"subitem_link_text": "Okumura, Yukihisa", "subitem_link_url": "http://soar-rd.shinshu-u.ac.jp/profile/ja.gNDVgpAF.html"}, {"subitem_link_text": "Suga, Hiroyuki", "subitem_link_url": "http://soar-rd.shinshu-u.ac.jp/profile/ja.HmShyVfp.html"}]}, "item_6_link_67": {"attribute_name": "WoS", "attribute_value_mlt": [{"subitem_link_text": "Web of Science", "subitem_link_url": "http://gateway.isiknowledge.com/gateway/Gateway.cgi?\u0026GWVersion=2\u0026SrcAuth=ShinshuUniv\u0026SrcApp=ShinshuUniv\u0026DestLinkType=FullRecord\u0026DestApp=WOS\u0026KeyUT=000287635800041"}]}, "item_6_publisher_4": {"attribute_name": "\u51fa\u7248\u8005", "attribute_value_mlt": [{"subitem_publisher": "The Japan Institute of Heterocyclic Chemistry"}]}, "item_6_relation_46": {"attribute_name": "\u4ed6\u306e\u8cc7\u6e90\u3068\u306e\u95a2\u4fc2\uff1aURI", "attribute_value_mlt": [{"subitem_relation_name": [{"subitem_relation_name_text": "http://www.heterocycles.jp/"}], "subitem_relation_type_id": {"subitem_relation_type_id_text": "http://www.heterocycles.jp/", "subitem_relation_type_select": "URI"}}]}, "item_6_relation_48": {"attribute_name": "DOI", "attribute_value_mlt": [{"subitem_relation_name": [{"subitem_relation_name_text": "10.3987/COM-09-S(S)41"}], "subitem_relation_type_id": {"subitem_relation_type_id_text": "https://doi.org/10.3987/COM-09-S(S)41", "subitem_relation_type_select": "DOI"}}]}, "item_6_rights_62": {"attribute_name": "\u6a29\u5229", "attribute_value_mlt": [{"subitem_rights": "Copyright\u00a9 2010 The Japan Institute of Heterocyclic Chemistry"}]}, "item_6_select_64": {"attribute_name": "\u8457\u8005\u7248\u30d5\u30e9\u30b0", "attribute_value_mlt": [{"subitem_select_item": "author"}]}, "item_6_source_id_35": {"attribute_name": "ISSN", "attribute_value_mlt": [{"subitem_source_identifier": "0385-5414", "subitem_source_identifier_type": "ISSN"}]}, "item_6_source_id_39": {"attribute_name": "NII ISSN", "attribute_value_mlt": [{"subitem_source_identifier": "0385-5414", "subitem_source_identifier_type": "ISSN"}]}, "item_6_source_id_40": {"attribute_name": "\u66f8\u8a8c\u30ec\u30b3\u30fc\u30c9ID", "attribute_value_mlt": [{"subitem_source_identifier": "AA00663739", "subitem_source_identifier_type": "NCID"}]}, "item_6_text_69": {"attribute_name": "wosonly authkey", "attribute_value_mlt": [{"subitem_text_value": "Cyclization; Synthesis; 3-Methylene-2(3H)-imidazo[1,2-a]pyridinone; 3-Vinylimidazo[1,2-a]pyridin-2-ol; Pyrano[2 \u0027,3 \u0027:4,5]imidazo[1,2-a]pyridine"}]}, "item_6_text_70": {"attribute_name": "wosonly keywords", "attribute_value_mlt": [{"subitem_text_value": "NITROGEN-BRIDGED HETEROCYCLES; SYNTHETIC METHOD"}]}, "item_6_textarea_68": {"attribute_name": "wosonly abstract", "attribute_value_mlt": [{"subitem_textarea_value": "3-[Bis(methylthio)methylene]-2(3H)-imidazo[1,2-a]pyridinones were prepared from the S-alkylation of pyridinium 1-[1-carbamoyl-1-[(methylthio) thiocarbonyl]]methylides with methyl iodide followed by the alkaline treatment of the resulting pyridinium salts. The reactions of these 3-methylene-2(3H)-imidazo[1,2-a]pyridinones with some ethyl cyano- or acyl-substituted acetates in the presence of a base did not afford the initially expected 2H-pyrano[2\u0027,3\u0027:4,5]imidazo[1,2-a]pyridine-2-one derivatives, but, instead of them, provided ethyl 3[2-hydroxyimidazo[1,2-a]pyridin-3-yl]acrylates. The thermolyses of these acrylates without any solvent under reduced pressure gave the corresponding 2H-pyrano[2\u0027,3\u0027:4,5]imidazo[1,2-a]pyridine-2-one derivatives."}]}, "item_creator": {"attribute_name": "\u8457\u8005", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "Abe,  Takashi"}], "nameIdentifiers": [{"nameIdentifier": "38191", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Okumura,  Yukihisa"}], "nameIdentifiers": [{"nameIdentifier": "38192", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Suga,  Hiroyuki"}], "nameIdentifiers": [{"nameIdentifier": "38193", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Kakehi,  Akikazu"}], "nameIdentifiers": [{"nameIdentifier": "38194", "nameIdentifierScheme": "WEKO"}]}]}, "item_files": {"attribute_name": "\u30d5\u30a1\u30a4\u30eb\u60c5\u5831", "attribute_type": "file", "attribute_value_mlt": [{"accessrole": "open_date", "date": [{"dateType": "Available", "dateValue": "2015-09-28"}], "displaytype": "detail", "download_preview_message": "", "file_order": 0, "filename": "NEW_APPROACH_IMIDAZOPYRIDINE_DERIVATIVES.pdf", "filesize": [{"value": "253.5 kB"}], "format": "application/pdf", "future_date_message": "", "is_thumbnail": false, "licensetype": "license_note", "mimetype": "application/pdf", "size": 253500.0, "url": {"label": "NEW_APPROACH_IMIDAZOPYRIDINE_DERIVATIVES.pdf", "url": "https://soar-ir.repo.nii.ac.jp/record/12510/files/NEW_APPROACH_IMIDAZOPYRIDINE_DERIVATIVES.pdf"}, "version_id": "862618b2-cf7a-46a1-9859-3917c5798c6f"}]}, "item_keyword": {"attribute_name": "\u30ad\u30fc\u30ef\u30fc\u30c9", "attribute_value_mlt": [{"subitem_subject": "Cyclization", "subitem_subject_scheme": "Other"}, {"subitem_subject": "Synthesis", "subitem_subject_scheme": "Other"}, {"subitem_subject": "Methylene-2(3H)-imidazo[1,2-a]pyridinone", "subitem_subject_scheme": "Other"}, {"subitem_subject": "Vinylimidazo[1,2-a]pyridin-2-ol", "subitem_subject_scheme": "Other"}, {"subitem_subject": "Pyrano[2\u2019,3\u2019:4,5]imidazo[1,2-a]pyridine", "subitem_subject_scheme": "Other"}]}, "item_language": {"attribute_name": "\u8a00\u8a9e", "attribute_value_mlt": [{"subitem_language": "eng"}]}, "item_resource_type": {"attribute_name": "\u8cc7\u6e90\u30bf\u30a4\u30d7", "attribute_value_mlt": [{"resourcetype": "journal article", "resourceuri": "http://purl.org/coar/resource_type/c_6501"}]}, "item_title": "A New Approach to Imidazo[1,2-a]pyridine Derivatives and Their Application to the Syntheses of Novel 2H-Pyrano[2\u2019,3\u2019:4,5]imidazo[1,2-a]pyridin-2-one Derivatives", "item_titles": {"attribute_name": "\u30bf\u30a4\u30c8\u30eb", "attribute_value_mlt": [{"subitem_title": "A New Approach to Imidazo[1,2-a]pyridine Derivatives and Their Application to the Syntheses of Novel 2H-Pyrano[2\u2019,3\u2019:4,5]imidazo[1,2-a]pyridin-2-one Derivatives", "subitem_title_language": "en"}]}, "item_type_id": "6", "owner": "1", "path": ["1221/1222"], "permalink_uri": "http://hdl.handle.net/10091/10740", "pubdate": {"attribute_name": "PubDate", "attribute_value": "2010-10-26"}, "publish_date": "2010-10-26", "publish_status": "0", "recid": "12510", "relation": {}, "relation_version_is_last": true, "title": ["A New Approach to Imidazo[1,2-a]pyridine Derivatives and Their Application to the Syntheses of Novel 2H-Pyrano[2\u2019,3\u2019:4,5]imidazo[1,2-a]pyridin-2-one Derivatives"], "weko_shared_id": -1}