Tailor-Made Silylating Agents for Efficient Surface Modification
摘要:
N-硅基二甲基胺是对羟基二氧化硅制剂进行化学表面改性的高效硅烷化剂。本文介绍了氯(5-X-3,3-二甲基戊基)-二甲基硅烷的合成及其转化为相应的(二甲基氨基)硅烷的过程,其中 X 是甲氧基、甲氧基甲氧基、氰基或二甲基氨基。笨重的取代基在表面形成了两级保护层。第二层保护层阻碍了亲核物进入硅原子,从而提高了水解稳定性。
Tailor-Made Silylating Agents for Efficient Surface Modification
摘要:
N-硅基二甲基胺是对羟基二氧化硅制剂进行化学表面改性的高效硅烷化剂。本文介绍了氯(5-X-3,3-二甲基戊基)-二甲基硅烷的合成及其转化为相应的(二甲基氨基)硅烷的过程,其中 X 是甲氧基、甲氧基甲氧基、氰基或二甲基氨基。笨重的取代基在表面形成了两级保护层。第二层保护层阻碍了亲核物进入硅原子,从而提高了水解稳定性。
SCHNEIDER, PHILIPPE;CLOUX, ROLAND;FOTI, KLARA;KOVATS, ERVIN SZ., SYNTHESIS,(1990) N1, C. 1027-1031
作者:SCHNEIDER, PHILIPPE、CLOUX, ROLAND、FOTI, KLARA、KOVATS, ERVIN SZ.
DOI:——
日期:——
SULFUR COMPOUNDS FOR ENHANCING COFFEE AROMA AND RESULTANT PRODUCTS CONTAINING SAME
申请人:Nestec S.A.
公开号:EP1679979B1
公开(公告)日:2008-11-26
Sulfur Compounds for Enhancing Coffee Aroma and Resultant Products Containing Same
申请人:Kerler Josef
公开号:US20090029023A1
公开(公告)日:2009-01-29
Methods and uses of one or more straight chain C
4
-C
5
mercapto-alkanones in an amount sufficient to increase the organoleptic properties of a coffee flavor provided in a food or beverage. The compounds may be used to replace or reinforce flavors or aromas that were at least partially removed during preparation of soluble coffee powder. The aroma-providing compound(s) may be added to soluble coffee powder prior to its incorporation or addition to the food or beverage in an amount sufficient to increase the coffee flavor thereto. Food products and beverages containing one or more of these aroma-providing substances are also included. Depending on which flavor notes and aromas are desired in the final product, other aroma-providing substances may be added to the food products and beverages. It has been found that particularly suitable additional aroma-providing compounds for use in the present invention are 4-methoxy-2-methylbutan-2-thiol alone or in combination with other sulfur containing coffee odorants.