The Migration Aptitude of Substituted Benzyl vs. Methyl in Carbonium Ion Reactions of the 2,2-Dimethyl-3-aryl-1-propyl System. The Question of Alkyl Participation1
A new method for alkylation of aromatic aldehydes using alkylboron chloride derivatives in the presence of oxygen
作者:George W Kabalka、Zhongzhi Wu、Yuhong Ju
DOI:10.1016/s0040-4020(02)00237-5
日期:2002.4
Reactions of aromatic aldehydes with alkylboron chloride derivatives in the presence of oxygen have been investigated. Dialkylboron chlorides react with aryl aldehydes to produce arylalkylmethanols in good to excellent yields. Under the same reaction conditions, alkylboron dichlorides lead to the formation of arylalkyl chlorides.
Alkylation of aromatic aldehydes with alkylboron chloride derivatives
作者:George W Kabalka、Zhongzhi Wu、Yuhong Ju
DOI:10.1016/s0040-4020(00)01160-1
日期:2001.2
The reaction of aryl aldehydes with alkylboron chlorides has been investigated. Monoalkylboron dichlorides react with aryl aldehydes in hexane under reflux conditions to give a mixture of dichloroarylmethane and benzyl chloride. Under the same reaction conditions, dialkylboron chlorides lead to formation of a mixture of benzyl chloride and the chloroalkylation product. In the presence of a base such
Deodorant cosmetic compositions comprising calcium silicate and sodium bicarbonate
申请人:Henkel AG & Co. KGaA
公开号:US11090237B2
公开(公告)日:2021-08-17
The present disclosure relates to deodorant cosmetic compositions including calcium silicate and baking soda. Furthermore, the present disclosure relates to a cosmetic product containing such compositions and the use of the compositions or products for reduction of the body odor released by perspiration.
TEXTILE FRIENDLY NONAEROSOL-ANTIPERSPIRANTS WITH METHANSULFONIC
申请人:Henkel AG & Co. KGaA
公开号:US20140173833A1
公开(公告)日:2014-06-26
Cosmetic antiperspirants for nonaerosol use, having a content of methanesulfonic acid and/or at least one physiologically acceptable salt of methanesulfonic acid, which exhibit less textile staining than known antiperspirants.
TEXTILE FRIENDLY NON-AEROSOL ANTIPERSPIRANTS WITH A HYDROXY ACID
申请人:Henkel AG & Co. KGaA
公开号:US20140178321A1
公开(公告)日:2014-06-26
The present application relates to cosmetic antiperspirants for nonaerosol use, having a content of at least one hydroxycarboxylic acid of formula (HCS-1)
HOOC—(CHOH)
n
—CHOH—R (HCS-1)
wherein n represents an integer in the range from 1 to 10 and the substituent R is selected from —H and —COOH, where the hydroxycarboxylic acid can be present in free form, in salt form, or as a lactone, and where the total quantity of hydroxycarboxylic acid(s) of formula (HCS-1), optionally in salt form and/or lactone form, is 0.3 to 5 wt %, preferably 0.5 to 3 wt %, particularly preferably 1 to 2.5 wt %,
which exhibit less textile staining than known antiperspirants.