PREPARATION OF 1,6-DIMETHYL-1,5-CYCLOOCTADIENE
PURPOSE:To obtain the titled substance, by dimerizing isoprene in the presence of a catalyst consisting of an iron carboxylate or a beta-diketonic compound, an organoaluminum compound or organomagnesium compound and a 2,2'-dipyridyl derivative containing an electron donative substituent group....
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| creator | OOTAKA SATOSHI KITATSUME SHIYOUJI |
| description | PURPOSE:To obtain the titled substance, by dimerizing isoprene in the presence of a catalyst consisting of an iron carboxylate or a beta-diketonic compound, an organoaluminum compound or organomagnesium compound and a 2,2'-dipyridyl derivative containing an electron donative substituent group. CONSTITUTION:Isoprene is catalytically cyclodimerized to give the titled substance. In the process, a catalyst consisting of (A) an iron carboxylate, e.g. iron (III) acetate, iron (II) lactate or iron (II) benzoate, or a beta-diketonic compound of formula I (n is 2 or 3; R' and R'' are alkyl, aryl or aralkyl), (B) a compound of formula II (R is alkyl, aryl, etc.; X is R , alkoxyl, H, etc.; l is 1-3) or formula III (R is alkyl, aryl, etc.; Y is halogen; m is 1 or 2) and (C) a compound having an electron donative substituent group of formula IV (R -R are alkyl, alkoxyl, amino, H, etc.) is used to give the titled substance in high selectivity. |
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CONSTITUTION:Isoprene is catalytically cyclodimerized to give the titled substance. In the process, a catalyst consisting of (A) an iron carboxylate, e.g. iron (III) acetate, iron (II) lactate or iron (II) benzoate, or a beta-diketonic compound of formula I (n is 2 or 3; R' and R'' are alkyl, aryl or aralkyl), (B) a compound of formula II (R is alkyl, aryl, etc.; X is R , alkoxyl, H, etc.; l is 1-3) or formula III (R is alkyl, aryl, etc.; Y is halogen; m is 1 or 2) and (C) a compound having an electron donative substituent group of formula IV (R -R are alkyl, alkoxyl, amino, H, etc.) is used to give the titled substance in high selectivity.</description><language>eng</language><subject>ACYCLIC OR CARBOCYCLIC COMPOUNDS ; APPARATUS THEREFOR ; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY ; CHEMISTRY ; GENERAL METHODS OF ORGANIC CHEMISTRY ; METALLURGY ; ORGANIC CHEMISTRY ; PERFORMING OPERATIONS ; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL ; THEIR RELEVANT APPARATUS ; TRANSPORTING</subject><creationdate>1984</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19840413&DB=EPODOC&CC=JP&NR=S5965026A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25543,76293</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19840413&DB=EPODOC&CC=JP&NR=S5965026A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>OOTAKA SATOSHI</creatorcontrib><creatorcontrib>KITATSUME SHIYOUJI</creatorcontrib><title>PREPARATION OF 1,6-DIMETHYL-1,5-CYCLOOCTADIENE</title><description>PURPOSE:To obtain the titled substance, by dimerizing isoprene in the presence of a catalyst consisting of an iron carboxylate or a beta-diketonic compound, an organoaluminum compound or organomagnesium compound and a 2,2'-dipyridyl derivative containing an electron donative substituent group. CONSTITUTION:Isoprene is catalytically cyclodimerized to give the titled substance. 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CONSTITUTION:Isoprene is catalytically cyclodimerized to give the titled substance. In the process, a catalyst consisting of (A) an iron carboxylate, e.g. iron (III) acetate, iron (II) lactate or iron (II) benzoate, or a beta-diketonic compound of formula I (n is 2 or 3; R' and R'' are alkyl, aryl or aralkyl), (B) a compound of formula II (R is alkyl, aryl, etc.; X is R , alkoxyl, H, etc.; l is 1-3) or formula III (R is alkyl, aryl, etc.; Y is halogen; m is 1 or 2) and (C) a compound having an electron donative substituent group of formula IV (R -R are alkyl, alkoxyl, amino, H, etc.) is used to give the titled substance in high selectivity.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | ACYCLIC OR CARBOCYCLIC COMPOUNDS APPARATUS THEREFOR CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY GENERAL METHODS OF ORGANIC CHEMISTRY METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING |
| title | PREPARATION OF 1,6-DIMETHYL-1,5-CYCLOOCTADIENE |
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