<http://webisa.webdatacommons.org/307691871>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/307691871>	<http://www.w3.org/ns/prov#value>	"The process for the preparation of the vinyl carbamates according to formula I hereinabove according to the present invention comprises heating an o-halogeno carbamate of formula II: ##STR7## in which R1, R2, R3 and R4 have the same meaning as defined hereinabove and X is a halogen atom, at a temperature between 70??? and 250??? C. for a period of time between several minutes up to several hours w" .
<http://webisa.webdatacommons.org/307691871>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/prov/215812655>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/307691871> .