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18861-15-9

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18861-15-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 18861-15-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,8,6 and 1 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 18861-15:
(7*1)+(6*8)+(5*8)+(4*6)+(3*1)+(2*1)+(1*5)=129
129 % 10 = 9
So 18861-15-9 is a valid CAS Registry Number.
InChI:InChI=1/C15H15NO2/c17-15(12-18-14-9-5-2-6-10-14)16-11-13-7-3-1-4-8-13/h1-10H,11-12H2,(H,16,17)

18861-15-9Relevant articles and documents

Ammonia-borane as a Catalyst for the Direct Amidation of Carboxylic Acids

Ramachandran, P. Veeraraghavan,Hamann, Henry J.

supporting information, p. 2938 - 2942 (2021/05/04)

Ammonia-borane serves as an efficient substoichiometric (10%) precatalyst for the direct amidation of both aromatic and aliphatic carboxylic acids. In situ generation of amine-boranes precedes the amidation and, unlike the amidation with stoichiometric amine-boranes, this process is facile with 1 equiv of the acid. This methodology has high functional group tolerance and chromatography-free purification but is not amenable for esterification. The latter feature has been exploited to prepare hydroxyl- and thiol-containing amides.

Solvent-free iron(III) chloride-catalyzed direct amidation of esters

Mkhonazi, Blessing D.,Shandu, Malibongwe,Tshinavhe, Ronewa,Simelane, Sandile B.,Moshapo, Paseka T.

supporting information, (2020/03/17)

Amide functional groups are prominent in a broad range of organic compounds with diverse beneficial applications. In this work, we report the synthesis of these functional groups via an iron(iii) chloride-catalyzed direct amidation of esters. The reactions are conducted under solvent-free conditions and found to be compatible with a range of amine and ester substrates generating the desired amides in short reaction times and good to excellent yields at a catalyst loading of 15 mol%.

Titanium(IV) isopropoxide as an efficient catalyst for direct amidation of nonactivated carboxylic acids

Lundberg, Helena,Tinnis, Fredrik,Adolfsson, Hans

supporting information, p. 2201 - 2204 (2012/10/30)

Secondary and tertiary amides are formed in high yields, in an efficient and environmentally benign titanium(IV) isopropoxide catalyzed direct amidation of carboxylic acids with primary and secondary amines. Georg Thieme Verlag Stuttgart ? New York.

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