CIS-DECAHYDROISOQUINOLINE
- CAS NO.:2744-08-3
- Empirical Formula: C9H17N
- Molecular Weight: 139.24
- MDL number: MFCD00137757
- SAFETY DATA SHEET (SDS)
What is CIS-DECAHYDROISOQUINOLINE?
The Uses of CIS-DECAHYDROISOQUINOLINE
(4aR,8aR)-Decahydroisoquinoline is a synthetic building block predominately used in the synthesis of natural products.
Purification Methods
The free base is treated with saturated aqueous picric acid, allowed to stand for 12hours, filtered, washed with MeOH to remove the more soluble trans isomer and recrystallised from MeOH to give pure cis-picrate m 149-150o. The picrate (~5g) is shaken with 5M aqueous NaOH (50mL) and Et2O (150mL) while H2O is added to the aqueous phase to dissolve insoluble Na picrate. The Et2O extract is dried over solid NaOH and then shaken with Al2O3 (Merck for chromatography) until the yellow color of traces of picric acid disappears (this color cannot be removed by repeated shaking with 5-10 M aqueous NaOH). The extract is concentrated to 50mL and dry HCl is bubbled through until separation of the white crystals of the cis-HCl is complete. These are washed with Et2O, dried at 100o and recrystallised from EtOH/EtOAc to yield pure cis-hydrochloride m 182-183o (dried in a vacuum desiccator over KOH) with IR (KBr) 2920, 2820, 1582, 1470, 1445, 1410, 1395, max 1313, 1135, 1080, 990, 870 cm-1 . The pure free base is prepared by dissolving the hydrochloride in 10M aqueous NaOH, extracted with Et2O, dried over solid KOH, filtered and distilled in a vacuum. It has IR (film) max 2920, 2820, 2720, 2560, 1584, 1470, 1445, 1415, 1395, 1315, 1300, 1135, 1080, 1020, 990, 873 cm-1 . The 1HNMR in CDCl3 is characteristically different from that of the trans-isomer. [Armarego J Chem Soc (C) 377 1967, Gray & Heitmeier J Am Chem Soc 80 6274 1958, Witkop J Am Chem Soc 70 2617 1948, Skita Chem Ber 57 1982 1924, Helfer Helv Chim Acta 6 7991923, Beilstein 20 II 73, 20 III/IV 2026.]
Properties of CIS-DECAHYDROISOQUINOLINE
Boiling point: | 202.5±0.0 °C(Predicted) |
Density | 0,95 g/cm3 |
pka | 11.84±0.20(Predicted) |
Safety information for CIS-DECAHYDROISOQUINOLINE
Computed Descriptors for CIS-DECAHYDROISOQUINOLINE
New Products
4-Fluorophenylacetic acid 4-Methylphenylacetic acid N-Boc-D-alaninol N-BOC-D/L-ALANINOL Tert-butyl bis(2-chloroethyl)carbamate 3-Morpholino-1-(4-nitrophenyl)-5,6-dihydropyridin- 2(1H)-one Furan-2,5-Dicarboxylic Acid Tropic acid S-2-CHLORO PROPIONIC ACID ETHYL ISOCYANOACETATE 2-Bromo-1,3-Bis(Dimethylamino)Trimethinium Hexafluorophosphate (6-METHYL-[1,3]DITHIOLO[4,5-b]QUINOXALIN-2-ONE INDAZOLE-3-CARBOXYLIC ACID 4-IODO BENZOIC ACID (2-Hydroxyphenyl)acetonitrile 4-Bromopyrazole 5,6-Dimethoxyindanone 2-(Cyanocyclohexyl)acetic acid 4-methoxy-3,5-dinitropyridine 2-aminopropyl benzoate hydrochloride 1-(4-(aminomethyl)benzyl)urea hydrochloride diethyl 2-(2-((tertbutoxycarbonyl)amino) ethyl)malonate tert-butyl 4- (ureidomethyl)benzylcarbamate Ethyl-2-chloro((4-methoxyphenyl)hydrazono)acetateRelated products of tetrahydrofuran
You may like
-
2033-24-1 98%View Details
2033-24-1 -
42831-50-5 5-METHYLISOXAZOLE-4-CARBOXYLIC ACID 98%View Details
42831-50-5 -
1975-50-4 98%View Details
1975-50-4 -
2-HYDROXY BENZYL ALCOHOL 98%View Details
90-01-7 -
2-Chloro-1,3-Bis(Dimethylamino)Trimethinium Hexafluorophosphate 221615-75-4 98%View Details
221615-75-4 -
61397-56-6 CIS BROMO BENZOATE 98%View Details
61397-56-6 -
14714-50-2 (2-Hydroxyphenyl)acetonitrile 98+View Details
14714-50-2 -
118753-70-1 98+View Details
118753-70-1