|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||C01B-006/10 C01B-006/00 C07F-005/02 C07F-005/00|
|미국특허분류(USC)||423/294; 423/283; 564/008|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 3 인용 특허 : 7|
The invention provides new methods for synthesis of B9H9-, B10H102-, B11H14-, and B12H122- salts, particularly alkylammonium salts of B9H9-, B10H102-, B11H14-, and B12H122-. More particularly, the invention provides methods of preparing tetraalkylamronium salts of B9H9-, B10H102-, B11H14-, and B12H122- by pyrolysis of tetraalkylammonium borohydrides under controlled conditions. The invention additionally provides methods of preparing, in an atom efficient process, octadecaborane from the tetraalkylammonium salts of the invention. Preferred methods of th...
What is claimed is: 1. A method of preparing B18H22 from boric acid comprising the steps of: (a) preparation of borate ester from boric acid and a primary, secondary, or tertiary alcohol; (b) reducing the borate ester with NaAIH4 or NaH to form NaBH4; (c) preparing R4NBH4 from NaBH4 and R4NX either in situ or after isolation of NaBH4, wherein R is a hydrocarbon and X is an anion; (d) pyrolysis of solid R4NBH4 at about 185 ° C. to form B10H102-; (e) oxidation of B10H102-to give B20H182-; (f) contacting a solution of B20H182-with acidic cation exchange r...