At Least Three Oxygens Containing Patents (Class 568/600)
Plural oxyalkylene groups bonded directly to each other (Class 568/601)
Plural acetal or ketal groups (e.g., tetraacetals, etc.) (Class 568/603)
  • Preparation of acetals
    Patent number: 4209643
    Abstract: A process is described for the production of predominately linear and alpha-branched acetals by reacting a C.sub.3 or higher alpha or internal olefin, carbon monoxide, hydrogen, and a C.sub.1 -C.sub.5 alkanol using a cobalt catalyst in the presence of a promoter which is a quaternary ammonium salt such as N-benzyl,N,N,N-trimethylammonium methoxide. When a quaternary ammonium salt is used, an increase in the rate of reaction is effected.
    Type: Grant
    Filed: December 11, 1978
    Date of Patent: June 24, 1980
    Assignee: Ethyl Corporation
    Inventor: Kju H. Shin
  • Process for preparing substituted oxyacetaldehydes and acetals thereof
    Patent number: 4205186
    Abstract: A process is described for the preparation of substituted oxyacetaldehydes and acetals thereof according to the reaction sequence: ##STR1## wherein R.sub.1 and R.sub.2 are each lower alkyl or R.sub.1 and R.sub.2, taken together form a lower alkylene group; wherein R.sub.3 is alkyl, alkenyl or alkadienyl and X is halogen selected from the group consisting of chlorine and bromine, the reaction (i) being carried out (1) using a "phase transfer agent" and (2) in a two phase system.
    Type: Grant
    Filed: January 16, 1979
    Date of Patent: May 27, 1980
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Mark A. Sprecker, John J. Kryschuk, John B. Hall
  • Process for preparing substituted cyclic acetals of oxyacetaldehydes and said cyclic acetals
    Patent number: 4159987
    Abstract: A process is described for the preparation of substituted oxyacetaldehydes and cyclic acetals thereof according to the reaction sequence: ##STR1## wherein R.sub.1 and R.sub.2, taken together form a lower alkylene group; wherein R.sub.3 is alkyl, alkenyl or alkadienyl and X is halogen selected from the group consisting of chlorine and bromine, the reaction (i) being carried out (1) using a "phase transfer agent" and (2) in a two phase system.
    Type: Grant
    Filed: May 3, 1978
    Date of Patent: July 3, 1979
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Mark A. Sprecker, John J. Kryschuk, John B. Hall