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US 2016/0096814 A1Published application
Method for producing dehydro rose oxide
AssigneeBASF SE
InventorsMarcus G. Schrems, Jan EGGERT, Jan U MÜLLER, Jan-Dirk ARNDT, Günter GOTTWALD, Volker HÜTT
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Abstract
The present invention relates to a method for producing dehydro rose oxide by reacting isoprenol and prenal in the presence of at least one sulfonic acid of formula R1—SO3H as catalyst, wherein R1 is selected from phenyl which carries 2 or 3 C1-C4-alkyl substituents, phenyl which carries one C8-C20-alkyl substituent and optionally also 1 or 2 C1-C4-alkyl substituents, and naphthyl which optionally carries 1 or 2 C1-C4-alkyl substituents.
Claims16
A method for producing 4-methylene-2-(2-methylprop-1-enyl)-tetrahydropyran of formula I
- which method comprises reacting 3-methylbut-3 -en-1-ol of formula II and 3-methylbut-2-enal of formula III
- in the presence of at least one sulfonic acid catalyst of formula R1—SO3H,
- wherein R1 is selected from phenyl that includes 2 or 3 C1-C4-alkyl substituents, phenyl that includes one C8-C20-alkyl substituent and optionally 1 or 2 C1-C4-alkyl substituents, and naphthyl, which optionally includes 1 or 2 C1-C4-alkyl substituents.
Dependencies are inferred from the claim text.