{"first_sentence": {"type": "/type/text", "value": "The action of Na/Hg on 1,2-dibromobenzene at 120 C gives a product originally believed to be (1) (L. Vechiotti, Ber., 1930, 63, 2275) but later (1977) shown to be the trimer (2a) (A.G. Massey, J. Organometal. Chem., 1986, 316, 25, and refs therein)."}, "physical_format": "Hardcover", "subtitle": "Heterocyclic Compounds (Rodd's Chemistry of Carbon Compounds 2nd Edition)", "last_modified": {"type": "/type/datetime", "value": "2008-04-30 09:38:13.731961"}, "languages": [{"key": "/l/eng"}], "publishers": ["Elsevier Science Ltd"], "number_of_pages": 268, "isbn_13": ["9780444428219"], "id": 13684112, "edition_name": "Subsequent edition", "isbn_10": ["0444428216"], "publish_date": "July 1987", "key": "/b/OL10260072M", "authors": [{"key": "/a/OL2707490A"}], "title": "Supplements to the 2nd Edition of Rodd's Chemistry of Carbon Compounds", "type": {"key": "/type/edition"}, "subjects": ["Biochemistry", "Nuclear chemistry, photochemistry & radiation", "Organic Chemistry", "Heterocyclic Chemistry", "Science/Mathematics"], "revision": 1}