Claims
- 1. A product comprising a major proportion of at least one compound defined according to the structure: ##STR276## wherein Y is the moiety having the structure: ##STR277## wherein one of the dashed lines represents a carbon-carbon single bond and the other of the dashed lines represents a carbon-carbon double bond; wherein R.sub.1 and R.sub.2 represent hydrogen or methyl with the proviso that one of R.sub.1 or R.sub.2 is hydrogen and the other of R.sub.1 and R.sub.2 is methyl; wherein R.sub.4, R.sub.5 and R.sub.6 represent hydrogen or methyl with the proviso that one of R.sub.4, R.sub.5 and R.sub.6 is hydrogen; and wherein R.sub.3 is isopropyl; produced by the process comprising the step of reacting in the presence of a protonic acid catalyst or a Lewis acid catalyst at least one methyl cyclopentadiene isomer having a structure selected from the group consisting of: ##STR278## or at least one precursor thereof having a structure selected from the group consisting of: ##STR279## with isopropyl alcohol in the presence of a Lewis acid catalyst selected from the group consisting of borontrifluoride, borontrifluoride etherate, zinc chloride and stannic chloride or a protonic acid catalyst selected from the group consisting of sulfuric acid, para toluene sulfonic acid and phosphoric acid at a temperature in the range of from 25.degree. C. up to 125.degree. C.
- 2. A product comprising a major proportion of at least one compound defined according to the structure: ##STR280## wherein Y is the moiety having the structure: ##STR281## wherein one of the dashed lines represents a carbon-carbon single bond and the other of the dashed lines represents a carbon-carbon double bond; wherein R.sub.1 and R.sub.2 represent hydrogen or methyl with the proviso that one of R.sub.1 or R.sub.2 is hydrogen and the other of R.sub.1 and R.sub.2 is methyl; wherein R.sub.4, R.sub.5 and R.sub.6 represent hydrogen or methyl with the proviso that one of R.sub.4, R.sub.5 and R.sub.6 is methyl and the other two of R.sub.4, R.sub.5 and R.sub.6 is hydrogen; and wherein R.sub.3 is allyl produced by the process comprising the step of reacting in the presence of a protonic acid catalyst or a Lewis acid catalyst at least one methyl cyclopentadiene isomer having a structure selected from the group consisting of: ##STR282## or at least one precursor thereof having a structure selected from the group consisting of: ##STR283## with allyl alcohol in the presence of a Lewis acid catalyst selected from the group consisting of borontrifluoride, borontrifluoride etherate, zinc chloride and stannic chloride or a protonic acid catalyst selected from the group consisting of sulfuric acid, para toluene sulfonic acid, and phosphoric acid at a temperature in the range of from about 25.degree. C. up to 125.degree. C.
Parent Case Info
This is a divisional of application Ser. No. 220,628, filed Dec. 29, 1980, which in turn, is a divisional of U.S. Letters Patent Ser. No. 144,898 filed on Apr. 29, 1980 now U.S. Pat. No. 4,275,251 issued on June 23, 1981.
Foreign Referenced Citations (1)
Number |
Date |
Country |
2642519 |
Mar 1978 |
DEX |
Divisions (2)
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Number |
Date |
Country |
Parent |
220628 |
Dec 1980 |
|
Parent |
144898 |
Apr 1980 |
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