午夜插插,噜噜噜影院,啪啪伊人网,欧美熟夫,景甜吻戏视频,男人强操性感蕾丝美女视频在线网站,日本美女跳舞视频

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
400-158-6606
Try our best to find the right business for you.
Do not miss inquiry messages Please log in to view all inquiry messages.

Welcome back!

ChemicalBook CAS DataBase List 4-DIETHYLAMINOBENZOIC ACID
5429-28-7

4-DIETHYLAMINOBENZOIC ACID synthesis

7synthesis methods
-

Yield:5429-28-7 74%

Reaction Conditions:

with potassium hydroxide;sodium hydroxide in neat (no solvent)Heating;

Steps:

Synthesis of the p-Aminobenzoic Acids. General Procedure
General procedure: Potassium hydroxide (3.6 g, 64 mmol) and sodium hydroxide (2.4 g, 60 mmol) weremixed and quickly crushed in a porcelain dish. Then the corresponding aldehyde(15 mmol) was added and the mixture was heated on a hot-plate under stirring until thealdehyde melted and additionally 5 minutes. When liquid aldehydes were used, heatingwas continued until temperature reached 140C. After cooling, the crude solid productmixture was added to water (100 mL) and ice (30 g) and acidified with hydrochloric acidto pH 4. The precipitate was collected, dried and recrystallized from ethanol.

References:

Pietrzak, Marek;J?drzejewska, Beata;M?drzejewska, Dorota;Bajorek, Agnieszka [Organic Preparations and Procedures International,2017,vol. 49,# 1,p. 45 - 52]

FullText

4-DIETHYLAMINOBENZOIC ACID Related Search: