테트라하이드로-4-메틸-2-(2-메틸-1-프로페닐)-2H-피란

테트라하이드로-4-메틸-2-(2-메틸-1-프로페닐)-2H-피란
테트라하이드로-4-메틸-2-(2-메틸-1-프로페닐)-2H-피란 구조식 이미지
카스 번호:
16409-43-1
한글명:
테트라하이드로-4-메틸-2-(2-메틸-1-프로페닐)-2H-피란
동의어(한글):
테트라하이드로-4-메틸-2-(2-메틸-1-프로페닐)-2H-피란(CASNO.16409-43-1);아이소부테닐메틸테트라하이드로피란;테트라하이드로-4-메틸-2-(2-메틸-1-프로페닐)-2H-피란
상품명:
4-Methyl-2-(2-methyl-1-propenyl)tetrahydropyran (cis- and trans- mixture)
동의어(영문):
ROSE OXIDE;2H-Pyran, tetrahydro-4-methyl-2-(2-methyl-1-propenyl)-;(Z)-Rose oxide;ISOBUTENYL METHYLTETRAHYDROPYRAN;TETRAHYDRO-4-METHYL-2-(2-METHYL-1-PROPENYL)-2H-PYRAN;ROSE OXIDE RACEMIC;Rosoxide;FEMA 3236;rosenoxide;c-rose oxide
CBNumber:
CB5344138
분자식:
C10H18O
포뮬러 무게:
154.25
MOL 파일:
16409-43-1.mol
MSDS 파일:
SDS

테트라하이드로-4-메틸-2-(2-메틸-1-프로페닐)-2H-피란 속성

끓는 점
86 °C20 mm Hg(lit.)
밀도
0.873 g/mL at 20 °C(lit.)
증기압
53Pa at 20℃
FEMA
3236 | TETRAHYDRO-4-METHYL-2-(2-METHYLPROPEN-1-YL)PYRAN
굴절률
n20/D 1.454
인화점
157 °F
저장 조건
under inert gas (nitrogen or Argon) at 2-8°C
색상
무색의 이동성 액체.
냄새
디프로필렌 글리콜 중 1.00%. 녹색 빨간 장미 매운 신선한 제라늄
?? ??
꽃향기
optical activity
[α]20/D 28±1°, neat
수용성
920mg/L at 20℃
JECFA Number
1237
BRN
1680588
LogP
3.3 at 23℃
CAS 데이터베이스
16409-43-1(CAS DataBase Reference)
EPA
2H-Pyran, tetrahydro-4-methyl-2-(2-methyl-1-propenyl)- (16409-43-1)
안전
  • 위험 및 안전 성명
  • 위험 및 사전주의 사항 (GHS)
위험품 표기 Xi
위험 카페고리 넘버 38-36/37/38
안전지침서 36-26
WGK 독일 3
RTECS 번호 UQ1470000
F 고인화성물질 10-23
HS 번호 29329990
독성 The acute oral LD50 value in rats was reported as 4.3 g/kg (3.7-4.9 g/kg) and the acute dermal LD50 value in rabbits as > 5 g/kg (Moreno, 1973).
기존화학 물질 2010-3-4199
그림문자(GHS): GHS hazard pictograms
신호 어: Warning
유해·위험 문구:
암호 유해·위험 문구 위험 등급 범주 신호 어 그림 문자 P- 코드
H315 피부에 자극을 일으킴 피부부식성 또는 자극성물질 구분 2 경고 GHS hazard pictograms P264, P280, P302+P352, P321,P332+P313, P362
예방조치문구:
P264 취급 후에는 손을 철저히 씻으시오.
P264 취급 후에는 손을 철저히 씻으시오.
P280 보호장갑/보호의/보안경/안면보호구를 착용하시오.
P302+P352 피부에 묻으면 다량의 물로 씻으시오.
P332+P313 피부 자극이 생기면 의학적인 조치· 조언을 구하시오.

테트라하이드로-4-메틸-2-(2-메틸-1-프로페닐)-2H-피란 C화학적 특성, 용도, 생산

화학적 성질

Rose Oxide occurs in small quantities, mainly as the levorotatory cis form, in essential oils (e.g., Bulgarian rose oil and geranium oil). Commercial synthetic products are either optically active or inactive mixtures of the cis- and trans-isomers. Their sensory properties depend on the starting material and the method of synthesis.They are colorless liquids with a strong odor reminiscent of geranium and rose oil.

출처

Reported found in the oils of rose (Bulgarian) and geranium (Réunion); both the cis- and the trans-form have been reportedly isolated from geranium oil. Unidentified isomers reported found in black currant berries, passion fruit, some types of Thymus and white wine.

제조 방법

Rose oxide is usually prepared from citronellol, which can be converted into a mixture of two allyl hydroperoxides by photosensitized oxidationwith singlet oxygen. Reduction of the hydroperoxideswith sodium sulfite yields the corresponding diols . Treatmentwith dilute sulfuric acid results in allylic rearrangement and spontaneous cyclization of one of the isomers; amixture of diastereoisomeric rose oxides is thus formed. The unreacted diol isomer is separated by distillation. (?)- Citronellol as the starting material yields an approximately 7 : 3 mixture of (?)-cisand (?)-trans-rose oxide. Higher proportions of the cis-isomer may be obtained by dehydration with a stronger acid.Other methods for the production of rose oxide starting from citronellol consist of halogenation–dehalogenation reactions of citronellol.
An alternative technical process does not use citronellol but starts from prenal [107-86-8] and 3-methyl-3-buten-1-ol [763-32-6]. Under acidic conditions, the reaction affords a mixture of isomers of dehydro rose oxide (C10H16O6; [1786- 08-9], [92356-05-3], [60857-05-8]). Subsequent hydrogenation using a ruthenium/alumina catalyst leads to rose oxide.The proportion of cis-isomer can be increased by isomerization under acidic conditions.

테트라하이드로-4-메틸-2-(2-메틸-1-프로페닐)-2H-피란 준비 용품 및 원자재

원자재

준비 용품


테트라하이드로-4-메틸-2-(2-메틸-1-프로페닐)-2H-피란 공급 업체

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Alchem Pharmtech,Inc.
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